diff --git a/Lib/test/test_import/__init__.py b/Lib/test/test_import/__init__.py
index c73ef6d38a75e4..e6fd33e208c4ba 100644
--- a/Lib/test/test_import/__init__.py
+++ b/Lib/test/test_import/__init__.py
@@ -377,7 +377,7 @@ def test_from_import_missing_attr_has_name_and_so_path(self):
             self.assertEqual(cm.exception.path, _testcapi.__spec__.origin)
             self.assertRegex(
                 str(cm.exception),
-                r"cannot import name 'i_dont_exist' from '_testcapi' \(.*\.(so|pyd)?\)"
+                r"cannot import name 'i_dont_exist' from '_testcapi' \(.*(\.(so|pyd))?\)"
             )
         else:
             self.assertEqual(