diff --git a/common.mk b/common.mk
index 58252f9..5894f1d 100644
--- a/common.mk
+++ b/common.mk
@@ -7,7 +7,7 @@
 #
 # NOTE NOTE NOTE
 #  The authoritative common.mk is located in:
-#    https://chromium.googlesource.com/chromiumos/platform2/+/master/common-mk
+#    https://chromium.googlesource.com/chromiumos/platform2/+/HEAD/common-mk
 #  Please make all changes there, then copy into place in other repos.
 # NOTE NOTE NOTE
 #