diff --git a/__init__.py b/__init__.py
index d6e44149d9..977d989b1a 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 party import *
 
diff --git a/party.py b/party.py
index dc217976fc..1d16900a14 100644
--- a/party.py
+++ b/party.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 Union, As, Column, Null
 
 from trytond.pool import Pool, PoolMeta
diff --git a/setup.py b/setup.py
index f09c006e3d..a32b04f718 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 9b02eb5185..ee65d1b384 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1,4 +1,6 @@
-# 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_party_relationship import suite
+
+__all__ = ['suite']
diff --git a/tests/test_party_relationship.py b/tests/test_party_relationship.py
index 178b5d7312..c885ac17ba 100644
--- a/tests/test_party_relationship.py
+++ b/tests/test_party_relationship.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 trytond.tests.test_tryton import POOL, DB_NAME, USER, CONTEXT, test_view,\
     test_depends, install_module, suite as tryton_suite