diff --git a/tests/light/test_compactor.py b/tests/light/test_compactor.py
index dbd9952c..8ae2a051 100644
--- a/tests/light/test_compactor.py
+++ b/tests/light/test_compactor.py
@@ -4,14 +4,16 @@ import asyncio
 
 from agentscope.message import Msg
 
-from reme.core.utils import get_std_logger
-from reme.memory.file_based import Compactor
 from test_utils import (
     get_dash_chat_model,
     get_formatter,
     get_token_counter,
 )
 
+from reme.core.utils import get_std_logger
+from reme.memory.file_based import Compactor
+
+
 logger = get_std_logger()