Index: tests/test_fixers.py
===================================================================
--- tests/test_fixers.py	(revisão 60659)
+++ tests/test_fixers.py	(cópia de trabalho)
@@ -1273,6 +1273,7 @@
                "cStringIO": ("io", ["StringIO"]),
                "__builtin__" : ("builtins", ["open", "Exception",
                    "__debug__", "str"]),
+               "UserDict": ("collections", ["UserDict"]),
               }
 
     def test_import_module(self):
Index: fixes/fix_imports.py
===================================================================
--- fixes/fix_imports.py	(revisão 60659)
+++ fixes/fix_imports.py	(cópia de trabalho)
@@ -16,7 +16,8 @@
 
 MAPPING = {"StringIO":  ("io", ["StringIO"]),
            "cStringIO": ("io", ["StringIO"]),
-           "__builtin__" : ("builtins", builtin_names), 
+           "__builtin__": ("builtins", builtin_names),
+           "UserDict": ("collections", ["UserDict"]),
           }