diff --git a/api-ref/source/conf.py b/api-ref/source/conf.py
index 26c71ea..bb87ccf 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/doc/source/conf.py b/doc/source/conf.py
index 0cffc34..d10b815 100755
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -1,4 +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/neutron_lib/__init__.py b/neutron_lib/__init__.py
index 1d52112..b1a9779 100644
--- a/neutron_lib/__init__.py
+++ b/neutron_lib/__init__.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/neutron_lib/tests/unit/callbacks/test_callback_exceptions.py b/neutron_lib/tests/unit/callbacks/test_callback_exceptions.py
index 4d70b31..8d7679f 100644
--- a/neutron_lib/tests/unit/callbacks/test_callback_exceptions.py
+++ b/neutron_lib/tests/unit/callbacks/test_callback_exceptions.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/neutron_lib/tests/unit/test_exceptions.py b/neutron_lib/tests/unit/test_exceptions.py
index fe2ac7b..263bdea 100644
--- a/neutron_lib/tests/unit/test_exceptions.py
+++ b/neutron_lib/tests/unit/test_exceptions.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/neutron_lib/tests/unit/test_neutron_lib.py b/neutron_lib/tests/unit/test_neutron_lib.py
index db5089b..918b715 100644
--- a/neutron_lib/tests/unit/test_neutron_lib.py
+++ b/neutron_lib/tests/unit/test_neutron_lib.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/releasenotes/source/conf.py b/releasenotes/source/conf.py
index 4a2254f..46033d0 100644
--- a/releasenotes/source/conf.py
+++ b/releasenotes/source/conf.py
@@ -1,4 +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