diff --git a/cli/brillo/brillo_sdk.py b/cli/brillo/brillo_sdk.py
index 814ba67..9ccd184 100644
--- a/cli/brillo/brillo_sdk.py
+++ b/cli/brillo/brillo_sdk.py
@@ -29,13 +29,13 @@
 
   def _UpdateWorkspaceSdk(self, bootstrap_path, workspace_path, version):
     """Install specified SDK, and associate the workspace with it."""
-    if project_sdk.FindSourceRoot(bootstrap_path):
+    if project_sdk.FindRepoRoot(bootstrap_path):
       cros_build_lib.Die('brillo sdk must run from a git clone. brbug.com/580')
 
     sdk_path = bootstrap_lib.ComputeSdkPath(bootstrap_path, version)
 
     # If this version already exists, no need to reinstall it.
-    if not project_sdk.FindSourceRoot(sdk_path):
+    if not project_sdk.FindRepoRoot(sdk_path):
       self._UpdateSdk(sdk_path, version)
 
     # Store the new version in the workspace.
@@ -89,7 +89,7 @@
   def _SelfUpdate(self, bootstrap_path):
     """Update the bootstrap repository."""
     # If our bootstrap is part of a repository, we shouldn't update.
-    if project_sdk.FindSourceRoot(bootstrap_path):
+    if project_sdk.FindRepoRoot(bootstrap_path):
       return
 
     # If the 'skip update' variable is set, we shouldn't update.
diff --git a/lib/project_sdk.py b/lib/project_sdk.py
index 518fafb..051ecf1 100644
--- a/lib/project_sdk.py
+++ b/lib/project_sdk.py
@@ -13,7 +13,7 @@
 from chromite.lib import osutils
 
 
-def FindSourceRoot(sdk_dir=None):
+def FindRepoRoot(sdk_dir=None):
   """Locate the SDK root directly by looking for .repo dir.
 
   This is very similar to constants.SOURCE_ROOT, except that it can operate
@@ -63,7 +63,7 @@
     The version of your SDK as a string. '6500.0.0'
     None if the directory doesn't appear to be an SDK.
   """
-  sdk_root = FindSourceRoot(sdk_dir)
+  sdk_root = FindRepoRoot(sdk_dir)
   if sdk_root is None:
     return None
 
diff --git a/lib/project_sdk_unittest.py b/lib/project_sdk_unittest.py
index 8545713..ed40645 100644
--- a/lib/project_sdk_unittest.py
+++ b/lib/project_sdk_unittest.py
@@ -50,26 +50,26 @@
     osutils.Touch(real_manifest_path, makedirs=True)
     os.symlink(real_manifest_path, sym_manifest_path)
 
-  def testFindSourceRootCurrentRepo(self):
-    """Test FindSourceRoot with default of CWD."""
-    self.assertEqual(constants.SOURCE_ROOT, project_sdk.FindSourceRoot())
+  def testFindRepoRootCurrentRepo(self):
+    """Test FindRepoRoot with default of CWD."""
+    self.assertEqual(constants.SOURCE_ROOT, project_sdk.FindRepoRoot())
 
-  def testFindSourceRootSpecifiedBogus(self):
-    """Test FindSourceRoot with non-existent directory outside the repo."""
-    self.assertIsNone(project_sdk.FindSourceRoot(self.bogus_dir))
+  def testFindRepoRootSpecifiedBogus(self):
+    """Test FindRepoRoot with non-existent directory outside the repo."""
+    self.assertIsNone(project_sdk.FindRepoRoot(self.bogus_dir))
 
-  def testFindSourceRootSpecifiedRoot(self):
-    """Test FindSourceRoot with top level of repo tree."""
-    self.assertEqual(self.repo_dir, project_sdk.FindSourceRoot(self.repo_dir))
+  def testFindRepoRootSpecifiedRoot(self):
+    """Test FindRepoRoot with top level of repo tree."""
+    self.assertEqual(self.repo_dir, project_sdk.FindRepoRoot(self.repo_dir))
 
-  def testFindSourceRootSpecifiedNested(self):
-    """Test FindSourceRoot with nested inside repo tree."""
-    self.assertEqual(self.repo_dir, project_sdk.FindSourceRoot(self.nested_dir))
+  def testFindRepoRootSpecifiedNested(self):
+    """Test FindRepoRoot with nested inside repo tree."""
+    self.assertEqual(self.repo_dir, project_sdk.FindRepoRoot(self.nested_dir))
 
-  def testFindSourceRootSpecifiedNonexistent(self):
-    """Test FindSourceRoot refuses to scan a nonexistent path."""
+  def testFindRepoRootSpecifiedNonexistent(self):
+    """Test FindRepoRoot refuses to scan a nonexistent path."""
     self.assertIsNone(
-        project_sdk.FindSourceRoot(os.path.join(self.nested_dir, 'not_there')))
+        project_sdk.FindRepoRoot(os.path.join(self.nested_dir, 'not_there')))
 
   def testFindVersionDefault(self):
     """Test FindVersion with default of CWD."""