Use attributes appropriately
diff --git a/Lib/test/test_httplib.py b/Lib/test/test_httplib.py
index 7860dd3..218ae9c 100644
--- a/Lib/test/test_httplib.py
+++ b/Lib/test/test_httplib.py
@@ -8,7 +8,7 @@
 
     def makefile(self, mode, bufsize=None):
         if mode != 'r' and mode != 'rb':
-            raise UnimplementedFileMode()
+            raise httplib.UnimplementedFileMode()
         return StringIO.StringIO(self.text)
 
 # Test HTTP status lines