diff --git a/tests/metagpt/serialize_deserialize/test_write_prd.py b/tests/metagpt/serialize_deserialize/test_write_prd.py
index 945ec5efd..afc483e9a 100644
--- a/tests/metagpt/serialize_deserialize/test_write_prd.py
+++ b/tests/metagpt/serialize_deserialize/test_write_prd.py
@@ -19,4 +19,4 @@ async def test_action_serdeser(new_filename):
     new_action = WritePRD(**ser_action_dict)
     assert new_action.name == "WritePRD"
     with pytest.raises(FileNotFoundError):
-        action_output = await new_action.run(with_messages=Message(content="write a cli snake game"))
+        await new_action.run(with_messages=Message(content="write a cli snake game"))