diff --git a/models/match/dssm/data/preprocess.py b/models/match/dssm/data/preprocess.py
index 3423120ecf87d0e84ce5536c884594109e0b8be4..c2a41051eeff01c861acdfb93a0188110684085b 100644
--- a/models/match/dssm/data/preprocess.py
+++ b/models/match/dssm/data/preprocess.py
@@ -1,3 +1,4 @@
+#encoding=utf-8
 # Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -11,7 +12,6 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-#encoding=utf-8
 
 import os
 import sys
diff --git a/models/match/multiview-simnet/data/preprocess.py b/models/match/multiview-simnet/data/preprocess.py
index d369fabdb3c676f2d908a87926b6c9425f4976af..4c0fb09022398af52a3c0f56225f60c93eaa29ca 100644
--- a/models/match/multiview-simnet/data/preprocess.py
+++ b/models/match/multiview-simnet/data/preprocess.py
@@ -1,3 +1,4 @@
+#encoding=utf-8
 # Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -11,7 +12,6 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-#encoding=utf-8
 
 import os
 import sys