diff --git a/CLOBBER b/CLOBBER
index e7197ee81c..d6eae4947c 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.
 
-Clobber for Python 3 migration
+Clobber for Idle GC backout