diff --git a/xtuner/engine/hooks/evaluate_chat_hook.py b/xtuner/engine/hooks/evaluate_chat_hook.py
index d3d4f9a42..05d508e4c 100644
--- a/xtuner/engine/hooks/evaluate_chat_hook.py
+++ b/xtuner/engine/hooks/evaluate_chat_hook.py
@@ -4,9 +4,9 @@
 
 import torch
 from mmengine.dist import master_only
-from mmengine.utils import mkdir_or_exist
 from mmengine.hooks import Hook
 from mmengine.model import is_model_wrapper
+from mmengine.utils import mkdir_or_exist
 from mmengine.utils.misc import get_object_from_string
 from transformers import GenerationConfig, StoppingCriteriaList