diff --git a/tools/cal_pos_neg.py b/tools/cal_pos_neg.py
index 5fcc13a68ad415b8039ad868e42c73f81e28b40a..831a5d80d4f34d229fb73f784eeba16330f6bbe1 100644
--- a/tools/cal_pos_neg.py
+++ b/tools/cal_pos_neg.py
@@ -1,5 +1,5 @@
-#   Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
-#
+# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
+#   
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at