diff --git a/CLOBBER b/CLOBBER
index 58a684de5c1..e54db052395 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.
 
-The backout of bug 994190 needed a clobber.
+Bug 1063304 moved IPDL PMobileConnection into its own namespace and needed a clobber.