diff --git a/__init__.py b/__init__.py
index 12b4d1aa48..ba23503417 100644
--- a/__init__.py
+++ b/__init__.py
@@ -1,5 +1,5 @@
-#This file is part of Tryton.  The COPYRIGHT file at the top level of this
-#repository contains the full copyright notices and license terms.
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
 
 from trytond.pool import Pool
 from .stock import *
diff --git a/setup.py b/setup.py
index b59702773d..b940a58149 100644
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
-#This file is part of Tryton.  The COPYRIGHT file at the top level of
-#this repository contains the full copyright notices and license terms.
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
 
 from setuptools import setup
 import re
diff --git a/stock.py b/stock.py
index 6a08393308..7a34a7ec37 100644
--- a/stock.py
+++ b/stock.py
@@ -1,5 +1,5 @@
-#This file is part of Tryton.  The COPYRIGHT file at the top level of
-#this repository contains the full copyright notices and license terms.
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
 from trytond.model import ModelView, fields
 from trytond.wizard import Wizard, StateView, StateTransition, Button
 from trytond.pyson import Eval
diff --git a/tests/__init__.py b/tests/__init__.py
index 47c1e5ca8b..f0994ec759 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1,5 +1,5 @@
-#This file is part of Tryton.  The COPYRIGHT file at the top level of
-#this repository contains the full copyright notices and license terms.
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
 
 from .test_stock_split import suite
 
diff --git a/tests/test_stock_split.py b/tests/test_stock_split.py
index 86b2557bc8..3b3c567da2 100644
--- a/tests/test_stock_split.py
+++ b/tests/test_stock_split.py
@@ -1,5 +1,5 @@
-#This file is part of Tryton.  The COPYRIGHT file at the top level of
-#this repository contains the full copyright notices and license terms.
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
 import unittest
 from decimal import Decimal
 import trytond.tests.test_tryton