diff --git a/Source/RetainingNotifier.m b/Source/RetainingNotifier.m
index da50f35e3..3f103569d 100644
--- a/Source/RetainingNotifier.m
+++ b/Source/RetainingNotifier.m
@@ -81,8 +81,7 @@
 /* xxx Deal with this. */
 - autorelease
 {
-  [self notImplemented:_cmd];
-  return nil;
+  return [super autorelease];
 }
 
 - registerForInvalidationNotification:  (id <InvalidationListening>)anObject