diff --git a/__init__.py b/__init__.py
index 3e352e503d..40c47bd873 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 .purchase import *
diff --git a/purchase.py b/purchase.py
index 8db0725026..92c128dfef 100644
--- a/purchase.py
+++ b/purchase.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 datetime
 from trytond.model import ModelView, ModelSQL, fields
 from trytond.pool import PoolMeta
diff --git a/setup.py b/setup.py
index 1d09db90c1..7f8061b9c9 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 7306c1ef8a..52a2a88cbf 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_supply_day import suite
 
diff --git a/tests/test_stock_supply_day.py b/tests/test_stock_supply_day.py
index 331ede7929..05fb304ffb 100644
--- a/tests/test_stock_supply_day.py
+++ b/tests/test_stock_supply_day.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 datetime
@@ -50,10 +50,10 @@ class StockSupplyDayTestCase(unittest.TestCase):
             (datetime.date(2011, 11, 21), 10, None,
                 datetime.date(2011, 12, 1)),
             ]
-            # Purchase date is Monday, 2011-11-21, the regular days to deliver
-            # is 10 days, which would be Wednesday 2011-12-01. But with the
-            # supplier weekday 0 (Monday) the forecast supply date is next
-            # Monday, the 2011-12-05.
+        # Purchase date is Monday, 2011-11-21, the regular days to deliver is
+        # 10 days, which would be Wednesday 2011-12-01. But with the supplier
+        # weekday 0 (Monday) the forecast supply date is next Monday, the
+        # 2011-12-05.
         for purchase_date, delivery_time, weekday, supply_date in dates:
             with Transaction().start(DB_NAME, USER, context=CONTEXT):
                 product_supplier = self.create_product_supplier_day(
@@ -74,9 +74,9 @@ class StockSupplyDayTestCase(unittest.TestCase):
             (datetime.date(2011, 11, 30), 4, 6, datetime.date(2011, 12, 6)),
             (datetime.date(2011, 12, 27), 6, 0, datetime.date(2012, 1, 3)),
             ]
-            # Supply date max is Tuesday, 2012-01-03, the supplier weekday 0
-            # which would be Monday 2012-01-02. But with the 6 days of delivery
-            # the forecast purchase date is the 2011-12-27.
+        # Supply date max is Tuesday, 2012-01-03, the supplier weekday 0 which
+        # would be Monday 2012-01-02. But with the 6 days of delivery the
+        # forecast purchase date is the 2011-12-27.
         for purchase_date, delivery_time, weekday, supply_date in dates:
             with Transaction().start(DB_NAME, USER, context=CONTEXT):
                 product_supplier = self.create_product_supplier_day(