diff --git a/proteus/__init__.py b/proteus/__init__.py
index 2fc45289d1..872549fd5a 100644
--- a/proteus/__init__.py
+++ b/proteus/__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.
 '''
 A library to access Tryton's models like a client.
 '''
diff --git a/proteus/config.py b/proteus/config.py
index 7705a4e7b2..94a0b04ed9 100644
--- a/proteus/config.py
+++ b/proteus/config.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.
 """
 Configuration functions for the proteus package for Tryton.
 """
diff --git a/proteus/pyson.py b/proteus/pyson.py
index 462fce9242..ca515eb3aa 100644
--- a/proteus/pyson.py
+++ b/proteus/pyson.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.
 __all__ = ['PYSONEncoder', 'PYSONDecoder', 'Eval', 'Not', 'Bool', 'And', 'Or',
     'Equal', 'Greater', 'Less', 'If', 'Get', 'In', 'Date', 'DateTime']
 try:
diff --git a/proteus/tests/__init__.py b/proteus/tests/__init__.py
index baddecf54c..a2eb8734a4 100644
--- a/proteus/tests/__init__.py
+++ b/proteus/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.
 import os
 import sys
 import unittest
diff --git a/proteus/tests/common.py b/proteus/tests/common.py
index 15e1622b45..81afcf7868 100644
--- a/proteus/tests/common.py
+++ b/proteus/tests/common.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 os
 from unittest import TestCase
 
diff --git a/proteus/tests/test_config.py b/proteus/tests/test_config.py
index 2ad83f2a41..a997fc7afc 100644
--- a/proteus/tests/test_config.py
+++ b/proteus/tests/test_config.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 proteus.config
 from .common import ProteusTestCase
 
diff --git a/proteus/tests/test_model.py b/proteus/tests/test_model.py
index fe4ac7d605..f0dd9837c5 100644
--- a/proteus/tests/test_model.py
+++ b/proteus/tests/test_model.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 proteus import Model
 from .common import ProteusTestCase
 
diff --git a/proteus/tests/test_report.py b/proteus/tests/test_report.py
index d11c7bc725..510925566f 100644
--- a/proteus/tests/test_report.py
+++ b/proteus/tests/test_report.py
@@ -1,7 +1,6 @@
-#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 unittest import TestCase
-from proteus import config, Report, Model
+# 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 proteus import Report, Model
 from .common import ProteusTestCase
 
 
diff --git a/proteus/tests/test_wizard.py b/proteus/tests/test_wizard.py
index 68b5226aab..0a812c27a8 100644
--- a/proteus/tests/test_wizard.py
+++ b/proteus/tests/test_wizard.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 proteus import Wizard, Model
 from .common import ProteusTestCase
 
diff --git a/setup.py b/setup.py
index 4f6c48cd76..a6f017333d 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, find_packages
 import os
 import proteus