diff --git a/__init__.py b/__init__.py
index d2e3fee7d9..8b07f5fec3 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 .payment import *
 from .account import *
diff --git a/account.py b/account.py
index 7e38075a79..8f091adc9c 100644
--- a/account.py
+++ b/account.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 sql import Null
 from sql.aggregate import Sum
 from sql.conditionals import Case, Coalesce
diff --git a/payment.py b/payment.py
index bec926dd4f..60de98ba2b 100644
--- a/payment.py
+++ b/payment.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 itertools import groupby
 
 from trytond.model import Workflow, ModelView, ModelSQL, fields
diff --git a/setup.py b/setup.py
index 7557a53df7..a2f2b18221 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/tests/__init__.py b/tests/__init__.py
index 9431450a64..6887e1522e 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_account_payment import suite
 
diff --git a/tests/test_account_payment.py b/tests/test_account_payment.py
index 0560dfbc38..8ff5f465bc 100644
--- a/tests/test_account_payment.py
+++ b/tests/test_account_payment.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