diff --git a/CLOBBER b/CLOBBER
index d4cdfaff33de..e949edc6ff44 100644
--- a/CLOBBER
+++ b/CLOBBER
@@ -22,4 +22,4 @@
 # changes to stick? As of bug 928195, this shouldn't be necessary! Please
 # don't change CLOBBER for WebIDL changes any more.
 
-Merge day clobber
\ No newline at end of file
+Bug 1610512 - Update to ICU 66 requires clobber