diff --git a/database_cleanup/__openerp__.py b/database_cleanup/__openerp__.py
index ab839f57f..a164e6043 100644
--- a/database_cleanup/__openerp__.py
+++ b/database_cleanup/__openerp__.py
@@ -22,7 +22,7 @@
 {
     'name': 'Database cleanup',
     'version': '0.1',
-    'author': 'Therp BV',
+    'author': "Therp BV,Odoo Community Association (OCA)",
     'depends': ['base'],
     'license': 'AGPL-3',
     'category': 'Tools',
diff --git a/database_cleanup/model/purge_columns.py b/database_cleanup/model/purge_columns.py
index 60b56ccc8..abcf1d2d4 100644
--- a/database_cleanup/model/purge_columns.py
+++ b/database_cleanup/model/purge_columns.py
@@ -96,8 +96,9 @@ class CleanupPurgeWizardColumn(orm.TransientModel):
         columns = list(set([
             column for model_pool in model_pools
             for column in model_pool._columns
-            if not (isinstance(model_pool._columns[column], fields.function)
-                    and not model_pool._columns[column].store)
+            if not (isinstance(model_pool._columns[column],
+                               fields.function) and
+                    not model_pool._columns[column].store)
             ]))
         columns += orm.MAGIC_COLUMNS
         columns += self.blacklist.get(model_pools[0]._table, [])
diff --git a/database_cleanup/model/purge_tables.py b/database_cleanup/model/purge_tables.py
index 8d9c86544..50bf3d8e6 100644
--- a/database_cleanup/model/purge_tables.py
+++ b/database_cleanup/model/purge_tables.py
@@ -110,9 +110,9 @@ class CleanupPurgeWizardTable(orm.TransientModel):
             known_tables += [
                 column._sql_names(model_pool)[0]
                 for column in model_pool._columns.values()
-                if column._type == 'many2many'
-                # unstored function fields of type m2m don't have _rel
-                and hasattr(column, '_rel')
+                if (column._type == 'many2many' and
+                    hasattr(column, '_rel'))  # unstored function fields of
+                                              # type m2m don't have _rel
                 ]
 
         # Cannot pass table names as a psycopg argument