diff --git a/Lib/test/test_pep352.py b/Lib/test/test_pep352.py
index 558cdb56d26..98debf0839f 100644
--- a/Lib/test/test_pep352.py
+++ b/Lib/test/test_pep352.py
@@ -180,8 +180,6 @@ def test_catch_string(self):
         # Catching a string is bad.
         self.catch_fails("spam")
 
-def test_main():
-    run_unittest(ExceptionClassTests, UsageTests)
 
 if __name__ == '__main__':
-    test_main()
+    unittest.main()