diff --git a/Lib/test/test_weakset.py b/Lib/test/test_weakset.py
index ee30d92c471..7f5b8eb544f 100644
--- a/Lib/test/test_weakset.py
+++ b/Lib/test/test_weakset.py
@@ -31,7 +31,7 @@ class TestWeakSet(unittest.TestCase):
     def test_methods(self):
         weaksetmethods = dir(WeakSet)
         for method in dir(set):
-            if method.startswith('_'):
+            if method == 'test_c_api' or method.startswith('_'):
                 continue
             self.assert_(method in weaksetmethods,
                          "WeakSet missing method " + method)