diff --git a/__init__.py b/__init__.py
index 7e10c204d0..0540b43f09 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 .configuration import *
diff --git a/bom.py b/bom.py
index 210bd865cd..add0389168 100644
--- a/bom.py
+++ b/bom.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, ModelSQL, fields
 from trytond.wizard import Wizard, StateView, Button
 from trytond.transaction import Transaction
diff --git a/configuration.py b/configuration.py
index eb35e63b21..ac0588e6fc 100644
--- a/configuration.py
+++ b/configuration.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, ModelSQL, ModelSingleton, fields
 from trytond.pyson import Eval
 
diff --git a/product.py b/product.py
index a0ad739c63..33bcb8847e 100644
--- a/product.py
+++ b/product.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, ModelSQL, fields
 from trytond.pyson import Eval, Get, If, Bool
 from trytond.pool import PoolMeta
diff --git a/production.py b/production.py
index df2b04f544..75201f7321 100644
--- a/production.py
+++ b/production.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 decimal import Decimal
 
 from trytond.model import ModelView, ModelSQL, Workflow, fields
diff --git a/setup.py b/setup.py
index be6b963901..f89a76acbf 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 0985784800..71e3780c88 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 fields
 from trytond.pyson import Eval
 from trytond.pool import PoolMeta
diff --git a/tests/__init__.py b/tests/__init__.py
index e64267ea31..b968fe3e43 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_production import suite
 
diff --git a/tests/test_production.py b/tests/test_production.py
index 4ae51cdd21..3306031089 100644
--- a/tests/test_production.py
+++ b/tests/test_production.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
 import doctest
 import trytond.tests.test_tryton