Remove traces of rfc822.
diff --git a/Lib/test/test_pyclbr.py b/Lib/test/test_pyclbr.py
index 70eea04..8287877 100644
--- a/Lib/test/test_pyclbr.py
+++ b/Lib/test/test_pyclbr.py
@@ -140,6 +140,7 @@
 
     def test_easy(self):
         self.checkModule('pyclbr')
+        self.checkModule('ast')
         self.checkModule('doctest', ignore=("TestResults", "_SpoofOut"))
         self.checkModule('difflib', ignore=("Match",))