diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index 1fe0de5..dc18f33 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -1718,6 +1718,7 @@
             ("__exit__", run_context, swallow, set(), {"__enter__" : iden}),
             ("__complex__", complex, complex_num, set(), {}),
             ("__format__", format, format_impl, set(), {}),
+            ("__dir__", dir, empty_seq, set(), {}),
             ]
 
         class Checker(object):