diff --git a/Lib/test/test_warnings/__init__.py b/Lib/test/test_warnings/__init__.py
index 71f6a300341..87f929f3147 100644
--- a/Lib/test/test_warnings/__init__.py
+++ b/Lib/test/test_warnings/__init__.py
@@ -447,6 +447,7 @@ def test_exec_filename(self):
                            "warnings.warn('hello', UserWarning)"),
                           filename, "exec")
         with original_warnings.catch_warnings(record=True) as w:
+            self.module.simplefilter("always", category=UserWarning)
             exec(codeobj)
         self.assertEqual(w[0].filename, filename)