diff --git a/Lib/test/test_configparser.py b/Lib/test/test_configparser.py
index 71a8f3f8d96..2b081986571 100644
--- a/Lib/test/test_configparser.py
+++ b/Lib/test/test_configparser.py
@@ -2052,5 +2052,11 @@ def test_instance_assignment(self):
             self.assertEqual(cfg['two'].getlen('one'), 5)
 
 
+class MiscTestCase(unittest.TestCase):
+    def test__all__(self):
+        blacklist = {"Error"}
+        support.check__all__(self, configparser, blacklist=blacklist)
+
+
 if __name__ == '__main__':
     unittest.main()