Index: pyyaml/trunk/lib3/yaml/constructor.py
===================================================================
--- pyyaml/trunk/lib3/yaml/constructor.py	(revision 328)
+++ pyyaml/trunk/lib3/yaml/constructor.py	(revision 329)
@@ -510,5 +510,5 @@
             module_name, object_name = name.rsplit('.', 1)
         else:
-            module_name = '__builtin__'
+            module_name = 'builtins'
             object_name = name
         try: