diff --git a/CLOBBER b/CLOBBER
index 1a23e9a0205..4ffd5a21871 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.
 
-Multiple bugs that happened to trigger bug 1042115.
+Bug 1046585 moved files to a different directory and required a clobber.