fill in actual issue number in tests
diff --git a/Lib/test/test_dict.py b/Lib/test/test_dict.py
index 14d62f5..0907744 100644
--- a/Lib/test/test_dict.py
+++ b/Lib/test/test_dict.py
@@ -556,7 +556,7 @@
         d = {}
 
     def test_container_iterator(self):
-        # Bug # XXX: tp_traverse was not implemented for dictiter objects
+        # Bug #3680: tp_traverse was not implemented for dictiter objects
         class C(object):
             pass
         iterators = (dict.iteritems, dict.itervalues, dict.iterkeys)