diff --git a/Lib/test/test_ctypes/test_win32_com_foreign_func.py b/Lib/test/test_ctypes/test_win32_com_foreign_func.py
index 819a5bdd3583be..651c9277d59af9 100644
--- a/Lib/test/test_ctypes/test_win32_com_foreign_func.py
+++ b/Lib/test/test_ctypes/test_win32_com_foreign_func.py
@@ -182,3 +182,7 @@ class IPersist(IUnknown):
         self.assertEqual(E_NOINTERFACE, e.exception.hresult)
 
         self.assertEqual(0, ppst.Release())
+
+
+if __name__ == '__main__':
+    unittest.main()