diff --git a/invoice.py b/invoice.py
index ce10a6e737..2c4a08f830 100644
--- a/invoice.py
+++ b/invoice.py
@@ -14,9 +14,9 @@ class InvoiceLine:
     def __setup__(cls):
         super(InvoiceLine, cls).__setup__()
         cls._error_messages.update({
-            'delete_purchase_invoice_line': 'You can not delete ' \
-                    'invoice lines that comes from a purchase!',
-            })
+                'delete_purchase_invoice_line': ('You can not delete '
+                    'invoice lines that comes from a purchase!'),
+                })
 
     @classmethod
     def write(cls, lines, vals):
@@ -49,9 +49,9 @@ class InvoiceLine:
     def delete(cls, lines):
         cursor = Transaction().cursor
         if lines:
-            cursor.execute('SELECT id FROM purchase_invoice_line_rel ' \
-                    'WHERE line IN (' + ','.join(['%s' for x in lines]) + ')',
-                    [l.id for l in lines])
+            cursor.execute('SELECT id FROM purchase_invoice_line_rel '
+                'WHERE line IN (' + ','.join(['%s' for x in lines]) + ')',
+                [l.id for l in lines])
             if cursor.rowcount:
                 cls.raise_user_error('delete_purchase_invoice_line')
         super(InvoiceLine, cls).delete(lines)
diff --git a/purchase.py b/purchase.py
index db1fd1e0b6..739a45579f 100644
--- a/purchase.py
+++ b/purchase.py
@@ -21,10 +21,10 @@ class Purchase:
     def __register__(cls, module_name):
         cursor = Transaction().cursor
         # Migration from 1.2: packing renamed into shipment
-        cursor.execute("UPDATE ir_model_data "\
-                "SET fs_id = REPLACE(fs_id, 'packing', 'shipment') "\
-                "WHERE fs_id like '%%packing%%' "\
-                    "AND module = %s", (module_name,))
+        cursor.execute("UPDATE ir_model_data "
+            "SET fs_id = REPLACE(fs_id, 'packing', 'shipment') "
+            "WHERE fs_id like '%%packing%%' "
+                "AND module = %s", (module_name,))
 
         super(Purchase, cls).__register__(module_name)
 
diff --git a/setup.py b/setup.py
index b76f831d6d..c712b0deed 100644
--- a/setup.py
+++ b/setup.py
@@ -25,10 +25,10 @@ requires = []
 for dep in info.get('depends', []):
     if not re.match(r'(ir|res|webdav)(\W|$)', dep):
         requires.append('trytond_%s >= %s.%s, < %s.%s' %
-                (dep, major_version, minor_version, major_version,
-                    minor_version + 1))
+            (dep, major_version, minor_version, major_version,
+                minor_version + 1))
 requires.append('trytond >= %s.%s, < %s.%s' %
-        (major_version, minor_version, major_version, minor_version + 1))
+    (major_version, minor_version, major_version, minor_version + 1))
 
 setup(name='trytond_purchase_invoice_line_standalone',
     version=info.get('version', '0.0.1'),
@@ -36,16 +36,16 @@ setup(name='trytond_purchase_invoice_line_standalone',
     long_description=read('README'),
     author='Tryton',
     url='http://www.tryton.org/',
-    download_url="http://downloads.tryton.org/" + \
-        info.get('version', '0.0.1').rsplit('.', 1)[0] + '/',
+    download_url=("http://downloads.tryton.org/" +
+        info.get('version', '0.0.1').rsplit('.', 1)[0] + '/'),
     package_dir={'trytond.modules.purchase_invoice_line_standalone': '.'},
     packages=[
         'trytond.modules.purchase_invoice_line_standalone',
         'trytond.modules.purchase_invoice_line_standalone.tests',
         ],
     package_data={
-        'trytond.modules.purchase_invoice_line_standalone': \
-            info.get('xml', []) + ['tryton.cfg', 'locale/*.po'],
+        'trytond.modules.purchase_invoice_line_standalone': (
+            info.get('xml', []) + ['tryton.cfg', 'locale/*.po']),
         },
     classifiers=[
         'Development Status :: 5 - Production/Stable',