diff --git a/api-ref/source/conf.py b/api-ref/source/conf.py
index 79c333cf7..64c59cdbc 100644
--- a/api-ref/source/conf.py
+++ b/api-ref/source/conf.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-#
 # 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
diff --git a/tacker/db/types.py b/tacker/db/types.py
index 39f3f9743..ae563ab09 100644
--- a/tacker/db/types.py
+++ b/tacker/db/types.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 # 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