diff --git a/chat/web_demo.py b/chat/web_demo.py
index 478043c..5d37a2e 100644
--- a/chat/web_demo.py
+++ b/chat/web_demo.py
@@ -23,7 +23,7 @@ from typing import Callable, List, Optional
 import streamlit as st
 import torch
 from torch import nn
-from transformers.generation.utils import (LogitsProcessorList, 
+from transformers.generation.utils import (LogitsProcessorList,
                                            StoppingCriteriaList)
 from transformers.utils import logging