diff --git a/cgpt/cgpt_add.c b/cgpt/cgpt_add.c
index 09a86ba..9267755 100644
--- a/cgpt/cgpt_add.c
+++ b/cgpt/cgpt_add.c
@@ -113,8 +113,8 @@
 
 static int CgptCheckAddValidity(struct drive *drive) {
   int gpt_retval;
-  if (GPT_SUCCESS != (gpt_retval = GptSanityCheck(&drive->gpt))) {
-    Error("GptSanityCheck() returned %d: %s\n",
+  if (GPT_SUCCESS != (gpt_retval = GptValidityCheck(&drive->gpt))) {
+    Error("GptValidityCheck() returned %d: %s\n",
           gpt_retval, GptError(gpt_retval));
     return -1;
   }
diff --git a/cgpt/cgpt_boot.c b/cgpt/cgpt_boot.c
index 989ffd7..d82720e 100644
--- a/cgpt/cgpt_boot.c
+++ b/cgpt/cgpt_boot.c
@@ -25,8 +25,8 @@
                            params->drive_size))
     return CGPT_FAILED;
 
-  if (GPT_SUCCESS != (gpt_retval = GptSanityCheck(&drive.gpt))) {
-    Error("GptSanityCheck() returned %d: %s\n",
+  if (GPT_SUCCESS != (gpt_retval = GptValidityCheck(&drive.gpt))) {
+    Error("GptValidityCheck() returned %d: %s\n",
           gpt_retval, GptError(gpt_retval));
     retval = CGPT_FAILED;
     goto done;
@@ -106,8 +106,8 @@
   }
 
   if (params->partition) {
-    if (GPT_SUCCESS != (gpt_retval = GptSanityCheck(&drive.gpt))) {
-      Error("GptSanityCheck() returned %d: %s\n",
+    if (GPT_SUCCESS != (gpt_retval = GptValidityCheck(&drive.gpt))) {
+      Error("GptValidityCheck() returned %d: %s\n",
             gpt_retval, GptError(gpt_retval));
       goto done;
     }
diff --git a/cgpt/cgpt_common.c b/cgpt/cgpt_common.c
index 6d3dcdb..2ace900 100644
--- a/cgpt/cgpt_common.c
+++ b/cgpt/cgpt_common.c
@@ -1042,8 +1042,8 @@
                            params->drive_size))
     return CGPT_FAILED;
 
-  if (GPT_SUCCESS != (gpt_retval = GptSanityCheck(&drive.gpt))) {
-    Error("GptSanityCheck() returned %d: %s\n",
+  if (GPT_SUCCESS != (gpt_retval = GptValidityCheck(&drive.gpt))) {
+    Error("GptValidityCheck() returned %d: %s\n",
           gpt_retval, GptError(gpt_retval));
     retval = CGPT_FAILED;
     goto done;
diff --git a/cgpt/cgpt_edit.c b/cgpt/cgpt_edit.c
index 6166d04..963a8ac 100644
--- a/cgpt/cgpt_edit.c
+++ b/cgpt/cgpt_edit.c
@@ -20,8 +20,8 @@
                            params->drive_size))
     return CGPT_FAILED;
 
-  if (GPT_SUCCESS != (gpt_retval = GptSanityCheck(&drive.gpt))) {
-    Error("GptSanityCheck() returned %d: %s\n",
+  if (GPT_SUCCESS != (gpt_retval = GptValidityCheck(&drive.gpt))) {
+    Error("GptValidityCheck() returned %d: %s\n",
           gpt_retval, GptError(gpt_retval));
     goto bad;
   }
diff --git a/cgpt/cgpt_find.c b/cgpt/cgpt_find.c
index d3cbb0b..6f4bbae 100644
--- a/cgpt/cgpt_find.c
+++ b/cgpt/cgpt_find.c
@@ -120,7 +120,7 @@
   int retval = 0;
   char partlabel[GPT_PARTNAME_LEN];
 
-  if (GPT_SUCCESS != GptSanityCheck(&drive->gpt)) {
+  if (GPT_SUCCESS != GptValidityCheck(&drive->gpt)) {
     return 0;
   }
 
diff --git a/cgpt/cgpt_legacy.c b/cgpt/cgpt_legacy.c
index e51495a..89b33e6 100644
--- a/cgpt/cgpt_legacy.c
+++ b/cgpt/cgpt_legacy.c
@@ -21,8 +21,8 @@
                            params->drive_size))
     return CGPT_FAILED;
 
-  if (GPT_SUCCESS != (gpt_retval = GptSanityCheck(&drive.gpt))) {
-    Error("GptSanityCheck() returned %d: %s\n",
+  if (GPT_SUCCESS != (gpt_retval = GptValidityCheck(&drive.gpt))) {
+    Error("GptValidityCheck() returned %d: %s\n",
           gpt_retval, GptError(gpt_retval));
     goto bad;
   }
diff --git a/cgpt/cgpt_prioritize.c b/cgpt/cgpt_prioritize.c
index f81ca8a..6d53f59 100644
--- a/cgpt/cgpt_prioritize.c
+++ b/cgpt/cgpt_prioritize.c
@@ -111,8 +111,8 @@
                            params->drive_size))
     return CGPT_FAILED;
 
-  if (GPT_SUCCESS != (gpt_retval = GptSanityCheck(&drive.gpt))) {
-    Error("GptSanityCheck() returned %d: %s\n",
+  if (GPT_SUCCESS != (gpt_retval = GptValidityCheck(&drive.gpt))) {
+    Error("GptValidityCheck() returned %d: %s\n",
           gpt_retval, GptError(gpt_retval));
     goto bad;
   }
diff --git a/cgpt/cgpt_repair.c b/cgpt/cgpt_repair.c
index f06d118..b4ddde6 100644
--- a/cgpt/cgpt_repair.c
+++ b/cgpt/cgpt_repair.c
@@ -19,9 +19,9 @@
                            params->drive_size))
     return CGPT_FAILED;
 
-  int gpt_retval = GptSanityCheck(&drive.gpt);
+  int gpt_retval = GptValidityCheck(&drive.gpt);
   if (params->verbose)
-    printf("GptSanityCheck() returned %d: %s\n",
+    printf("GptValidityCheck() returned %d: %s\n",
            gpt_retval, GptError(gpt_retval));
 
   GptRepair(&drive.gpt);
diff --git a/cgpt/cgpt_show.c b/cgpt/cgpt_show.c
index c1ea240..3923815 100644
--- a/cgpt/cgpt_show.c
+++ b/cgpt/cgpt_show.c
@@ -180,8 +180,8 @@
 
 static int GptShow(struct drive *drive, CgptShowParams *params) {
   int gpt_retval;
-  if (GPT_SUCCESS != (gpt_retval = GptSanityCheck(&drive->gpt))) {
-    Error("GptSanityCheck() returned %d: %s\n",
+  if (GPT_SUCCESS != (gpt_retval = GptValidityCheck(&drive->gpt))) {
+    Error("GptValidityCheck() returned %d: %s\n",
           gpt_retval, GptError(gpt_retval));
     return CGPT_FAILED;
   }
diff --git a/firmware/2lib/2common.c b/firmware/2lib/2common.c
index e51b84f..09379cc 100644
--- a/firmware/2lib/2common.c
+++ b/firmware/2lib/2common.c
@@ -267,7 +267,7 @@
 	struct vb2_signature *sig = &block->keyblock_signature;
 	vb2_error_t rv;
 
-	/* Sanity check keyblock before attempting signature check of data */
+	/* Validity check keyblock before attempting signature check of data */
 	VB2_TRY(vb2_check_keyblock(block, size, sig));
 
 	VB2_DEBUG("Checking keyblock signature...\n");
@@ -290,7 +290,7 @@
 
 	VB2_DEBUG("Verifying preamble.\n");
 
-	/* Sanity checks before attempting signature of data */
+	/* Validity checks before attempting signature of data */
 	if(size < sizeof(*preamble)) {
 		VB2_DEBUG("Not enough data for preamble header\n");
 		return VB2_ERROR_PREAMBLE_TOO_SMALL_FOR_HEADER;
diff --git a/firmware/2lib/2ui_screens.c b/firmware/2lib/2ui_screens.c
index 04f037b..e8f5916 100644
--- a/firmware/2lib/2ui_screens.c
+++ b/firmware/2lib/2ui_screens.c
@@ -415,11 +415,11 @@
 {
 	VB2_DEBUG("Physical presence confirmed!\n");
 
-	/* Sanity check, should never happen. */
+	/* Validity check, should never happen. */
 	if (ui->state->screen->id != VB2_SCREEN_RECOVERY_TO_DEV ||
 	    (vb2_get_sd(ui->ctx)->flags & VB2_SD_FLAG_DEV_MODE_ENABLED) ||
 	    !vb2_allow_recovery(ui->ctx)) {
-		VB2_DEBUG("ERROR: Dev transition sanity check failed\n");
+		VB2_DEBUG("ERROR: Dev transition validity check failed\n");
 		return VB2_REQUEST_UI_CONTINUE;
 	}
 
@@ -630,7 +630,7 @@
 {
 	vb2_error_t rv;
 
-	/* Sanity check, should never happen. */
+	/* Validity check, should never happen. */
 	if (!(ui->ctx->flags & VB2_CONTEXT_DEVELOPER_MODE) ||
 	    !vb2_dev_boot_allowed(ui->ctx) ||
 	    !vb2_dev_boot_external_allowed(ui->ctx)) {
diff --git a/firmware/2lib/include/2common.h b/firmware/2lib/include/2common.h
index e3a7989..dbc6264 100644
--- a/firmware/2lib/include/2common.h
+++ b/firmware/2lib/include/2common.h
@@ -371,7 +371,7 @@
 			    const struct vb2_workbuf *wb);
 
 /**
- * Check the sanity of a keyblock structure.
+ * Check the validity of a keyblock structure.
  *
  * Verifies all the header fields.  Does not verify key index or keyblock
  * flags.  Should be called before verifying the keyblock data itself using
@@ -388,7 +388,7 @@
 /**
  * Verify a keyblock using a public key.
  *
- * Header fields are also checked for sanity.  Does not verify key index or key
+ * Header fields are also checked for validity. Does not verify key index or key
  * block flags.  Signature inside block is destroyed during check.
  *
  * @param block		Keyblock to verify
@@ -402,7 +402,7 @@
 				const struct vb2_workbuf *wb);
 
 /**
- * Check the sanity of a firmware preamble using a public key.
+ * Check the validity of a firmware preamble using a public key.
  *
  * The signature in the preamble is destroyed during the check.
  *
diff --git a/firmware/lib/cgptlib/cgptlib.c b/firmware/lib/cgptlib/cgptlib.c
index 2cc77b4..3fbb2fd 100644
--- a/firmware/lib/cgptlib/cgptlib.c
+++ b/firmware/lib/cgptlib/cgptlib.c
@@ -19,9 +19,9 @@
 	gpt->current_kernel = CGPT_KERNEL_ENTRY_NOT_FOUND;
 	gpt->current_priority = 999;
 
-	retval = GptSanityCheck(gpt);
+	retval = GptValidityCheck(gpt);
 	if (GPT_SUCCESS != retval) {
-		VB2_DEBUG("GptInit() failed sanity check\n");
+		VB2_DEBUG("GptInit() failed validity check\n");
 		return retval;
 	}
 
diff --git a/firmware/lib/cgptlib/cgptlib_internal.c b/firmware/lib/cgptlib/cgptlib_internal.c
index 593b1e2..cb8ad2b 100644
--- a/firmware/lib/cgptlib/cgptlib_internal.c
+++ b/firmware/lib/cgptlib/cgptlib_internal.c
@@ -237,7 +237,7 @@
 	return 0;
 }
 
-int GptSanityCheck(GptData *gpt)
+int GptValidityCheck(GptData *gpt)
 {
 	int retval;
 	GptHeader *header1 = (GptHeader *)(gpt->primary_header);
diff --git a/firmware/lib/cgptlib/include/cgptlib_internal.h b/firmware/lib/cgptlib/include/cgptlib_internal.h
index cc01f4c..10ffa39 100644
--- a/firmware/lib/cgptlib/include/cgptlib_internal.h
+++ b/firmware/lib/cgptlib/include/cgptlib_internal.h
@@ -129,11 +129,11 @@
  *
  * On error, returns a GPT_ERROR_* return code.
  */
-int GptSanityCheck(GptData *gpt);
+int GptValidityCheck(GptData *gpt);
 
 /**
  * Repair GPT data by copying from one set of valid headers/entries to the
- * other.  Assumes GptSanityCheck() has been run to determine which headers
+ * other.  Assumes GptValidityCheck() has been run to determine which headers
  * and/or entries are already valid.
  *
  * The caller must make sure that even if one of the entries table is invalid
diff --git a/firmware/lib/tpm_lite/tlcl.c b/firmware/lib/tpm_lite/tlcl.c
index 4b3714d..47f58dc 100644
--- a/firmware/lib/tpm_lite/tlcl.c
+++ b/firmware/lib/tpm_lite/tlcl.c
@@ -257,8 +257,8 @@
 		return TPM_E_AUTHFAIL;
 	}
 
-	/* Sanity check to make sure the command buffer has sufficient space to
-	 * add the auth block at the end of the command. */
+	/* Validity check to make sure the command buffer has sufficient space
+	 * to add the auth block at the end of the command. */
 	if (command_buffer_size < kTpmRequestHeaderLength) {
 		return TPM_E_BUFFER_SIZE;
 	}
diff --git a/firmware/lib/vboot_api_kernel.c b/firmware/lib/vboot_api_kernel.c
index 4ae52c5..eeabde8 100644
--- a/firmware/lib/vboot_api_kernel.c
+++ b/firmware/lib/vboot_api_kernel.c
@@ -73,7 +73,7 @@
 	for (i = 0; i < disk_count; i++) {
 		VB2_DEBUG("trying disk %d\n", (int)i);
 		/*
-		 * Sanity-check what we can. FWIW, VbTryLoadKernel() is always
+		 * Validity-check what we can. FWIW, VbTryLoadKernel() is always
 		 * called with only a single bit set in get_info_flags.
 		 *
 		 * Ensure that we got a partition with only the flags we asked
diff --git a/firmware/lib/vboot_kernel.c b/firmware/lib/vboot_kernel.c
index 50a4d06..6a0b0f3 100644
--- a/firmware/lib/vboot_kernel.c
+++ b/firmware/lib/vboot_kernel.c
@@ -626,10 +626,10 @@
 		VB2_DEBUG("Good partition %d\n", params->partition_number);
 		shcall.check_result = VBSD_LKC_CHECK_GOOD_PARTITION;
 		/*
-		 * Sanity check - only store a new TPM version if we found one.
-		 * If lowest_version is still at its initial value, we didn't
-		 * find one; for example, we're in developer mode and just
-		 * didn't look.
+		 * Validity check - only store a new TPM version if we found
+		 * one. If lowest_version is still at its initial value, we
+		 * didn't find one; for example, we're in developer mode and
+		 * just didn't look.
 		 */
 		if (lowest_version != LOWEST_TPM_VERSION &&
 		    lowest_version > sd->kernel_version)
diff --git a/firmware/lib/vboot_ui_legacy_clamshell.c b/firmware/lib/vboot_ui_legacy_clamshell.c
index 47e6fdb..a1ffe5b 100644
--- a/firmware/lib/vboot_ui_legacy_clamshell.c
+++ b/firmware/lib/vboot_ui_legacy_clamshell.c
@@ -300,7 +300,7 @@
 			/* See if we should disable virtual dev-mode switch. */
 			VB2_DEBUG("sd->flags=%#x\n", sd->flags);
 
-			/* Sanity check, should never fail. */
+			/* Validity check, should never fail. */
 			VB2_ASSERT(sd->flags & VB2_SD_FLAG_DEV_MODE_ENABLED);
 
 			/* Stop the countdown while we go ask... */
diff --git a/firmware/lib/vboot_ui_legacy_menu.c b/firmware/lib/vboot_ui_legacy_menu.c
index f5165ad..4bad564 100644
--- a/firmware/lib/vboot_ui_legacy_menu.c
+++ b/firmware/lib/vboot_ui_legacy_menu.c
@@ -389,7 +389,7 @@
 /* Action that enables developer mode and reboots. */
 static vb2_error_t to_dev_action(struct vb2_context *ctx)
 {
-	/* Sanity check, should never happen. */
+	/* Validity check, should never happen. */
 	if ((vb2_get_sd(ctx)->flags & VB2_SD_FLAG_DEV_MODE_ENABLED) ||
 	    !vb2_allow_recovery(ctx))
 		return VB2_REQUEST_UI_CONTINUE;
diff --git a/firmware/lib20/include/vb2_common.h b/firmware/lib20/include/vb2_common.h
index 20e0014..53a077f 100644
--- a/firmware/lib20/include/vb2_common.h
+++ b/firmware/lib20/include/vb2_common.h
@@ -48,7 +48,7 @@
 /**
  * Verify a keyblock using its hash.
  *
- * Header fields are also checked for sanity.  Does not verify key index or key
+ * Header fields are also checked for validity. Does not verify key index or key
  * block flags.  Use this for self-signed keyblocks in developer mode.
  *
  * @param block		Keyblock to verify
@@ -62,7 +62,7 @@
 				     const struct vb2_workbuf *wb);
 
 /**
- * Check the sanity of a kernel preamble using a public key.
+ * Check the validity of a kernel preamble using a public key.
  *
  * The signature in the preamble is destroyed during the check.
  *
diff --git a/firmware/lib20/kernel.c b/firmware/lib20/kernel.c
index ed04c6f..e1422a4 100644
--- a/firmware/lib20/kernel.c
+++ b/firmware/lib20/kernel.c
@@ -46,7 +46,7 @@
 	uint8_t *digest;
 	uint32_t digest_size;
 
-	/* Sanity check keyblock before attempting hash check of data */
+	/* Validity check keyblock before attempting hash check of data */
 	VB2_TRY(vb2_check_keyblock(block, size, sig));
 
 	VB2_DEBUG("Checking keyblock hash...\n");
diff --git a/firmware/lib20/packed_key.c b/firmware/lib20/packed_key.c
index 6d8fdeb..e2e9b22 100644
--- a/firmware/lib20/packed_key.c
+++ b/firmware/lib20/packed_key.c
@@ -46,7 +46,7 @@
 	if (!vb2_aligned(buf32, sizeof(uint32_t)))
 		return VB2_ERROR_UNPACK_KEY_ALIGN;
 
-	/* Sanity check key array size */
+	/* Validity check key array size */
 	key->arrsize = buf32[0];
 	if (key->arrsize * sizeof(uint32_t) != vb2_rsa_sig_size(key->sig_alg))
 		return VB2_ERROR_UNPACK_KEY_ARRAY_SIZE;
diff --git a/firmware/stub/tpm_lite_stub.c b/firmware/stub/tpm_lite_stub.c
index c77b82c..b59db33 100644
--- a/firmware/stub/tpm_lite_stub.c
+++ b/firmware/stub/tpm_lite_stub.c
@@ -273,7 +273,7 @@
 #endif
 
 #ifndef NDEBUG
-	/* sanity checks */
+	/* validity checks */
 	tag = TpmTag(request);
 	response_tag = TpmTag(response);
 	assert(
diff --git a/futility/file_type_usbpd1.c b/futility/file_type_usbpd1.c
index 658b48c..9379188 100644
--- a/futility/file_type_usbpd1.c
+++ b/futility/file_type_usbpd1.c
@@ -63,7 +63,7 @@
 	VB2_DEBUG("rw_size     0x%08x\n", rw_size);
 	VB2_DEBUG("rw_offset   0x%08x\n", rw_offset);
 
-	/* Now let's do some sanity checks. */
+	/* Now let's do some validity checks. */
 	if (ro_size > len || ro_offset > len - ro_size ||
 	    rw_size > len || rw_offset > len - rw_size) {
 		printf("size/offset values are bogus\n");
diff --git a/futility/vb1_helper.c b/futility/vb1_helper.c
index ef497e6..ecb193b 100644
--- a/futility/vb1_helper.c
+++ b/futility/vb1_helper.c
@@ -322,7 +322,7 @@
 	uint64_t vmlinuz_header_address = 0;
 	uint32_t now = 0;
 
-	/* Sanity-check the keyblock */
+	/* Validity-check the keyblock */
 	struct vb2_keyblock *keyblock = (struct vb2_keyblock *)kpart_data;
 	VB2_DEBUG("Keyblock is %#x bytes\n", keyblock->keyblock_size);
 	now += keyblock->keyblock_size;
@@ -383,7 +383,7 @@
 	g_kernel_blob_data = kpart_data + now;
 	g_kernel_blob_size = preamble->body_signature.data_size;
 
-	/* Sanity check */
+	/* Validity check */
 	if (kpart_size < now + g_kernel_blob_size) {
 		fprintf(stderr,
 			"kernel body size %u exceeds partition end\n",
diff --git a/host/lib/host_key2.c b/host/lib/host_key2.c
index 6984c67..913c6df 100644
--- a/host/lib/host_key2.c
+++ b/host/lib/host_key2.c
@@ -315,7 +315,7 @@
 
 	key->arrsize = buf32[0];
 
-	/* Sanity check key array size */
+	/* Validity check key array size */
 	if (key->arrsize * sizeof(uint32_t) != vb2_rsa_sig_size(key->sig_alg))
 		return VB2_ERROR_UNPACK_KEY_ARRAY_SIZE;
 
diff --git a/host/lib/include/host_key.h b/host/lib/include/host_key.h
index 9b594c6..c6fea5b 100644
--- a/host/lib/include/host_key.h
+++ b/host/lib/include/host_key.h
@@ -113,7 +113,7 @@
 struct vb2_packed_key *vb2_read_packed_key(const char *filename);
 
 /**
- * Sanity-check a packed key structure.
+ * Validity-check a packed key structure.
  *
  * @param key	     	Key to check
  * @param size		Size of key buffer in bytes
diff --git a/host/lib21/host_key.c b/host/lib21/host_key.c
index cfa9941..c880d45 100644
--- a/host/lib21/host_key.c
+++ b/host/lib21/host_key.c
@@ -399,7 +399,7 @@
 	if (vb2_read_file(filename, &buf, &size))
 		return VB2_ERROR_READ_PACKED_KEY_DATA;
 
-	/* Sanity check: make sure key unpacks properly */
+	/* Validity check: make sure key unpacks properly */
 	if (vb21_unpack_key(&key, buf, size))
 		return VB2_ERROR_READ_PACKED_KEY;
 
diff --git a/host/lib21/include/host_common21.h b/host/lib21/include/host_common21.h
index fa8086b..55b623d 100644
--- a/host/lib21/include/host_common21.h
+++ b/host/lib21/include/host_common21.h
@@ -21,7 +21,7 @@
  * Return the description of an object starting with a vb21_struct_common
  * header.
  *
- * Does not sanity-check the buffer; merely returns the pointer.
+ * Does not validity-check the buffer; merely returns the pointer.
  *
  * @param buf		Pointer to common object
  * @return A pointer to description or an empty string if none.
diff --git a/scripts/image_signing/ensure_sane_lsb-release.sh b/scripts/image_signing/ensure_sane_lsb-release.sh
index a42866a..7476a8e 100755
--- a/scripts/image_signing/ensure_sane_lsb-release.sh
+++ b/scripts/image_signing/ensure_sane_lsb-release.sh
@@ -59,7 +59,7 @@
 }
 
 # Usage: lsb_syntaxcheck path-to-lsb-file
-# Enforces a number of basic sanity checks on the overall format and contents
+# Enforces a number of basic validity checks on the overall format and contents
 # of the lsb-release file:
 # - Every line is "key=value".
 # - No space after key, no space before value.
diff --git a/scripts/image_signing/make_dev_ssd.sh b/scripts/image_signing/make_dev_ssd.sh
index 42b90a5..1fdbfaf 100755
--- a/scripts/image_signing/make_dev_ssd.sh
+++ b/scripts/image_signing/make_dev_ssd.sh
@@ -48,7 +48,8 @@
   "List of partitions to examine (default: $DEFAULT_PARTITIONS)" ""
 DEFINE_boolean recovery_key "$FLAGS_FALSE" \
   "Use recovery key to sign image (to boot from USB)" ""
-DEFINE_boolean force "$FLAGS_FALSE" "Skip sanity checks and make the change" "f"
+DEFINE_boolean force "$FLAGS_FALSE" \
+  "Skip validity checks and make the change" "f"
 DEFINE_boolean default_rw_root "${FLAGS_TRUE}" \
   "When --remove_rootfs_verification is set, change root mount option to RW." ""
 
@@ -334,8 +335,8 @@
   return $resigned_kernels
 }
 
-sanity_check_crossystem_flags() {
-  debug_msg "crossystem sanity check"
+validity_check_crossystem_flags() {
+  debug_msg "crossystem validity check"
   if [ -n "${FLAGS_save_config}" ]; then
     debug_msg "not resigning kernel."
     return
@@ -360,8 +361,8 @@
   return $FLAGS_FALSE
 }
 
-sanity_check_live_partitions() {
-  debug_msg "Partition sanity check"
+validity_check_live_partitions() {
+  debug_msg "Partition validity check"
   if [ "$FLAGS_partitions" = "$ROOTDEV_KERNEL" ]; then
     debug_msg "only for current active partition - safe."
     return
@@ -387,8 +388,8 @@
   return $FLAGS_FALSE
 }
 
-sanity_check_live_firmware() {
-  debug_msg "Firmware compatibility sanity check"
+validity_check_live_firmware() {
+  debug_msg "Firmware compatibility validity check"
   if [ "$(crossystem mainfw_type)" = "developer" ]; then
     debug_msg "developer type firmware in active."
     return
@@ -471,12 +472,12 @@
       die "No valid kernel partitions on ${FLAGS_image} (${FLAGS_partitions})."
     FLAGS_partitions="$valid_partitions"
 
-    # Sanity checks
+    # Validity checks
     if [ "$FLAGS_force" = "$FLAGS_TRUE" ]; then
       echo "
-      !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-      ! INFO: ALL SANITY CHECKS WERE BYPASSED. YOU ARE ON YOUR OWN. !
-      !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+      !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+      ! INFO: ALL VALIDITY CHECKS WERE BYPASSED. YOU ARE ON YOUR OWN. !
+      !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
       " >&2
       local i
       for i in $(seq 5 -1 1); do
@@ -484,9 +485,9 @@
         sleep 1
       done
       echo ""
-    elif ! sanity_check_live_firmware ||
-         ! sanity_check_live_partitions ||
-         ! sanity_check_crossystem_flags; then
+    elif ! validity_check_live_firmware ||
+         ! validity_check_live_partitions ||
+         ! validity_check_crossystem_flags; then
       die "IMAGE ${FLAGS_image} IS NOT MODIFIED."
     fi
   fi
diff --git a/scripts/image_signing/sign_android_image.sh b/scripts/image_signing/sign_android_image.sh
index c1f7c76..06d6f2b 100755
--- a/scripts/image_signing/sign_android_image.sh
+++ b/scripts/image_signing/sign_android_image.sh
@@ -53,7 +53,7 @@
 
   info "Start signing framework apks"
 
-  # Counters for sanity check.
+  # Counters for validity check.
   local counter_platform=0
   local counter_media=0
   local counter_shared=0
@@ -133,7 +133,7 @@
   info "Found ${counter_shared} shared APKs."
   info "Found ${counter_releasekey} release APKs."
   info "Found ${counter_total} total APKs."
-  # Sanity check.
+  # Validity check.
   if [[ ${counter_platform} -lt 2 || ${counter_media} -lt 2 ||
         ${counter_shared} -lt 2 || ${counter_releasekey} -lt 2 ||
         ${counter_total} -lt 25 ]]; then
@@ -174,7 +174,7 @@
   cp "${xml}" "${orig}"
   sudo sed -i -E "s/${pattern}/\1${new_cert}"'\2/g' "${xml}"
 
-  # Sanity check.
+  # Validity check.
   if cmp "${xml}" "${orig}"; then
     die "Failed to replace SELinux policy cert"
   fi
@@ -267,7 +267,7 @@
   replace_ota_cert "${system_mnt}" "${key_dir}/releasekey.x509.pem"
   reapply_file_security_context "${system_mnt}" "${root_fs_dir}"
 
-  # Sanity check.
+  # Validity check.
   snapshot_file_properties "${system_mnt}" > "${working_dir}/properties.new"
   local d
   if ! d=$(diff "${working_dir}"/properties.{orig,new}); then
@@ -281,7 +281,7 @@
   if [[ -f "${packages_cache}" ]]; then
     if type -P aapt &>/dev/null; then
       info "Regenerating packages cache ${packages_cache}"
-      # For the sanity check.
+      # For the validity check.
       local packages_before=$(grep "<package " "${packages_cache}" | wc -l)
       local vendor_mnt=$(make_temp_dir)
       local vendor_img="${android_dir}/vendor.raw.img"
diff --git a/scripts/image_signing/sign_official_build.sh b/scripts/image_signing/sign_official_build.sh
index 0d02fe3..53c6a04 100755
--- a/scripts/image_signing/sign_official_build.sh
+++ b/scripts/image_signing/sign_official_build.sh
@@ -321,7 +321,7 @@
   sudo umount "${stateful_dir}"
 }
 
-# Do a sanity check on the image's rootfs
+# Do a validity check on the image's rootfs
 # ARGS: Image
 verify_image_rootfs() {
   local rootfs=$1
diff --git a/scripts/keygeneration/keyset_version_check.sh b/scripts/keygeneration/keyset_version_check.sh
index f351b75..2ab3394 100755
--- a/scripts/keygeneration/keyset_version_check.sh
+++ b/scripts/keygeneration/keyset_version_check.sh
@@ -3,7 +3,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-# Script that sanity checks a keyset to ensure actual key versions
+# Script that validity checks a keyset to ensure actual key versions
 # match those set in key.versions.
 
 # Load common constants and variables.
@@ -16,7 +16,7 @@
   cat <<EOF
 Usage: $0 <keyset directory>
 
-Sanity check a keyset directory for key versions.
+Validity check a keyset directory for key versions.
 EOF
   exit 1
 fi
diff --git a/tests/cgptlib_test.c b/tests/cgptlib_test.c
index e522592..39d3aeb 100644
--- a/tests/cgptlib_test.c
+++ b/tests/cgptlib_test.c
@@ -850,8 +850,8 @@
 	return TEST_OK;
 }
 
-/* Test both sanity checking and repair. */
-static int SanityCheckTest(void)
+/* Test both validity checking and repair. */
+static int ValidityCheckTest(void)
 {
 	GptData *gpt = GetEmptyGptData();
 	GptHeader *h1 = (GptHeader *)gpt->primary_header;
@@ -861,13 +861,13 @@
 
 	/* Unmodified test data is completely sane */
 	BuildTestGptData(gpt);
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_BOTH == gpt->valid_entries);
 	EXPECT(MASK_NONE == gpt->ignored);
 	/* Repair doesn't damage it */
 	GptRepair(gpt);
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_BOTH == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
@@ -876,19 +876,19 @@
 	/* Invalid sector size should fail */
 	BuildTestGptData(gpt);
 	gpt->sector_bytes = 1023;
-	EXPECT(GPT_ERROR_INVALID_SECTOR_SIZE == GptSanityCheck(gpt));
+	EXPECT(GPT_ERROR_INVALID_SECTOR_SIZE == GptValidityCheck(gpt));
 
 	/* Modify headers */
 	BuildTestGptData(gpt);
 	gpt->primary_header[0]++;
 	gpt->secondary_header[0]++;
-	EXPECT(GPT_ERROR_INVALID_HEADERS == GptSanityCheck(gpt));
+	EXPECT(GPT_ERROR_INVALID_HEADERS == GptValidityCheck(gpt));
 	EXPECT(0 == gpt->valid_headers);
 	EXPECT(0 == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
 	/* Repair can't fix completely busted headers */
 	GptRepair(gpt);
-	EXPECT(GPT_ERROR_INVALID_HEADERS == GptSanityCheck(gpt));
+	EXPECT(GPT_ERROR_INVALID_HEADERS == GptValidityCheck(gpt));
 	EXPECT(0 == gpt->valid_headers);
 	EXPECT(0 == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
@@ -896,12 +896,12 @@
 
 	BuildTestGptData(gpt);
 	gpt->primary_header[0]++;
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_SECONDARY == gpt->valid_headers);
 	EXPECT(MASK_SECONDARY == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
 	GptRepair(gpt);
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_BOTH == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
@@ -909,12 +909,12 @@
 
 	BuildTestGptData(gpt);
 	gpt->secondary_header[0]++;
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_PRIMARY == gpt->valid_headers);
 	EXPECT(MASK_PRIMARY == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
 	GptRepair(gpt);
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_BOTH == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
@@ -927,12 +927,12 @@
 	BuildTestGptData(gpt);
 	h1->size++;
 	RefreshCrc32(gpt);
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_PRIMARY == gpt->valid_headers);
 	EXPECT(MASK_BOTH == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
 	GptRepair(gpt);
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_BOTH == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
@@ -942,13 +942,13 @@
 	BuildTestGptData(gpt);
 	gpt->primary_entries[0]++;
 	gpt->secondary_entries[0]++;
-	EXPECT(GPT_ERROR_INVALID_ENTRIES == GptSanityCheck(gpt));
+	EXPECT(GPT_ERROR_INVALID_ENTRIES == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_NONE == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
 	/* Repair can't fix both copies of entries being bad, either. */
 	GptRepair(gpt);
-	EXPECT(GPT_ERROR_INVALID_ENTRIES == GptSanityCheck(gpt));
+	EXPECT(GPT_ERROR_INVALID_ENTRIES == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_NONE == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
@@ -956,12 +956,12 @@
 
 	BuildTestGptData(gpt);
 	gpt->primary_entries[0]++;
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_SECONDARY == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
 	GptRepair(gpt);
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_BOTH == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
@@ -969,12 +969,12 @@
 
 	BuildTestGptData(gpt);
 	gpt->secondary_entries[0]++;
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_PRIMARY == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
 	GptRepair(gpt);
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_BOTH == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
@@ -991,7 +991,7 @@
 	RefreshCrc32(gpt);
 	tempptr = gpt->primary_entries;
 	gpt->primary_entries = gpt->secondary_entries;
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_SECONDARY == gpt->valid_headers);
 	EXPECT(MASK_BOTH == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
@@ -1001,12 +1001,12 @@
 	BuildTestGptData(gpt);
 	gpt->primary_header[0]++;
 	gpt->primary_entries[0]++;
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_SECONDARY == gpt->valid_headers);
 	EXPECT(MASK_SECONDARY == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
 	GptRepair(gpt);
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_BOTH == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
@@ -1015,12 +1015,12 @@
 	BuildTestGptData(gpt);
 	gpt->secondary_header[0]++;
 	gpt->secondary_entries[0]++;
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_PRIMARY == gpt->valid_headers);
 	EXPECT(MASK_PRIMARY == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
 	GptRepair(gpt);
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_BOTH == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
@@ -1033,12 +1033,12 @@
 	BuildTestGptData(gpt);
 	gpt->secondary_entries[0]++;
 	RefreshCrc32(gpt);
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_PRIMARY == gpt->valid_headers);
 	EXPECT(MASK_PRIMARY == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
 	GptRepair(gpt);
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_BOTH == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
@@ -1047,13 +1047,13 @@
 	/* Test unloaded entry array. */
 	BuildTestGptData(gpt);
 	gpt->primary_entries = NULL;
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_SECONDARY == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
 	gpt = GetEmptyGptData();
 	BuildTestGptData(gpt);
 	gpt->secondary_entries = NULL;
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_PRIMARY == gpt->valid_entries);
 	EXPECT(0 == gpt->ignored);
 	gpt = GetEmptyGptData();
@@ -1061,13 +1061,13 @@
 	/* Test unloaded header. */
 	BuildTestGptData(gpt);
 	gpt->primary_header = NULL;
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_SECONDARY == gpt->valid_headers);
 	EXPECT(0 == gpt->ignored);
 	gpt = GetEmptyGptData();
 	BuildTestGptData(gpt);
 	gpt->secondary_header = NULL;
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_PRIMARY == gpt->valid_headers);
 	EXPECT(0 == gpt->ignored);
 	gpt = GetEmptyGptData();
@@ -1078,7 +1078,7 @@
 	memset(gpt->primary_header, 0, sizeof(GptHeader));
 	memcpy(h1->signature, GPT_HEADER_SIGNATURE_IGNORED,
 	       GPT_HEADER_SIGNATURE_SIZE);
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_BOTH == gpt->valid_entries);
 	EXPECT(MASK_PRIMARY == gpt->ignored);
@@ -1090,7 +1090,7 @@
 	memset(gpt->secondary_header, 0, sizeof(GptHeader));
 	memcpy(h2->signature, GPT_HEADER_SIGNATURE_IGNORED,
 	       GPT_HEADER_SIGNATURE_SIZE);
-	EXPECT(GPT_SUCCESS == GptSanityCheck(gpt));
+	EXPECT(GPT_SUCCESS == GptValidityCheck(gpt));
 	EXPECT(MASK_BOTH == gpt->valid_headers);
 	EXPECT(MASK_BOTH == gpt->valid_entries);
 	EXPECT(MASK_SECONDARY == gpt->ignored);
@@ -1102,7 +1102,7 @@
 	       GPT_HEADER_SIGNATURE_SIZE);
 	memcpy(h2->signature, GPT_HEADER_SIGNATURE_IGNORED,
 	       GPT_HEADER_SIGNATURE_SIZE);
-	EXPECT(GPT_ERROR_INVALID_HEADERS == GptSanityCheck(gpt));
+	EXPECT(GPT_ERROR_INVALID_HEADERS == GptValidityCheck(gpt));
 	EXPECT(0 == gpt->valid_headers);
 	EXPECT(0 == gpt->valid_entries);
 	EXPECT(MASK_BOTH == gpt->ignored);
@@ -1115,7 +1115,7 @@
 	memcpy(h1->signature, GPT_HEADER_SIGNATURE_IGNORED,
 	       GPT_HEADER_SIGNATURE_SIZE);
 	gpt->secondary_entries[0]++;
-	EXPECT(GPT_ERROR_INVALID_ENTRIES == GptSanityCheck(gpt));
+	EXPECT(GPT_ERROR_INVALID_ENTRIES == GptValidityCheck(gpt));
 	EXPECT(MASK_SECONDARY == gpt->valid_headers);
 	EXPECT(0 == gpt->valid_entries);
 	EXPECT(MASK_PRIMARY == gpt->ignored);
@@ -1620,7 +1620,7 @@
 		{ TEST_CASE(EntriesCrcTest), },
 		{ TEST_CASE(ValidEntryTest), },
 		{ TEST_CASE(OverlappedPartitionTest), },
-		{ TEST_CASE(SanityCheckTest), },
+		{ TEST_CASE(ValidityCheckTest), },
 		{ TEST_CASE(NoValidKernelEntryTest), },
 		{ TEST_CASE(EntryAttributeGetSetTest), },
 		{ TEST_CASE(EntryTypeTest), },
diff --git a/tests/tpm_lite/tpmtest_timing.c b/tests/tpm_lite/tpmtest_timing.c
index eaba52f..b021763 100644
--- a/tests/tpm_lite/tpmtest_timing.c
+++ b/tests/tpm_lite/tpmtest_timing.c
@@ -3,7 +3,7 @@
  * found in the LICENSE file.
  */
 
-/* Timing test for various TPM operations.  This is mostly a sanity check to
+/* Timing test for various TPM operations.  This is mostly a validity check to
  * make sure the part doesn't have ridicolously bad timing on simple
  * operations.
  */
diff --git a/tests/vb20_kernel_tests.c b/tests/vb20_kernel_tests.c
index 73cb372..3f26549 100644
--- a/tests/vb20_kernel_tests.c
+++ b/tests/vb20_kernel_tests.c
@@ -196,15 +196,15 @@
 	TEST_SUCC(vb2_verify_keyblock_hash(kb, kb->keyblock_size, &wb),
 		  "Keyblock hash good");
 
-	/* Sanity check keyblock */
+	/* Validity check keyblock */
 	reset_common_data(FOR_KEYBLOCK);
 	kb->magic[0] ^= 0xd0;
 	TEST_EQ(vb2_verify_keyblock_hash(kb, kb->keyblock_size, &wb),
-		VB2_ERROR_KEYBLOCK_MAGIC, "Keyblock sanity check");
+		VB2_ERROR_KEYBLOCK_MAGIC, "Keyblock validity check");
 
 	/*
-	 * Sanity check should be looking at the keyblock hash struct, not the
-	 * keyblock signature struct.
+	 * Validity check should be looking at the keyblock hash struct, not
+	 * the keyblock signature struct.
 	 */
 	reset_common_data(FOR_KEYBLOCK);
 	kb->keyblock_hash.data_size = sizeof(*kb) - 1;
diff --git a/tests/vb2_recovery_reasons_tests.c b/tests/vb2_recovery_reasons_tests.c
index c1cb95b..5def4d2 100644
--- a/tests/vb2_recovery_reasons_tests.c
+++ b/tests/vb2_recovery_reasons_tests.c
@@ -17,10 +17,10 @@
 		TEST_PTR_NEQ(vb2_get_recovery_reason_string(i), NULL,
 			     "Non-null reason");
 
-	/* Sanity check on one of the strings */
+	/* Validity check on one of the strings */
 	TEST_EQ(strcmp(vb2_get_recovery_reason_string(VB2_RECOVERY_GBB_HEADER),
 		       "Error parsing GBB header"), 0,
-		"Recovery reason sanity check");
+		"Recovery reason validity check");
 }
 
 int main(void)
diff --git a/utility/chromeos-tpm-recovery b/utility/chromeos-tpm-recovery
index 28a8fa3..ac7dfcc 100755
--- a/utility/chromeos-tpm-recovery
+++ b/utility/chromeos-tpm-recovery
@@ -39,9 +39,9 @@
     return 0
   fi
 
-  # First some sanity checks: X -eq X checks that X is a number. cut may return
-  # the whole string if no delimiter found, so major != minor checks that the
-  # version was at least somewhat correctly formatted.
+  # First some validity checks: X -eq X checks that X is a number. cut may
+  # return the whole string if no delimiter found, so major != minor checks that
+  # the version was at least somewhat correctly formatted.
   if [ $major -eq $major ] && [ $minor -eq $minor ] && [ $major -ne $minor ]; then
     # Now what we really care about: is this firmware older than CL:2041695?
     if [ $major -lt 12953 ]; then
@@ -147,7 +147,7 @@
 # MAIN PROGRAM
 # ------------
 
-# Sanity check: are we executing in a recovery image?
+# validity check: are we executing in a recovery image?
 
 if [ -e $dot_recovery ]; then
   quit "This is a developer utility, it should never run on a (production) recovery image"