diff --git a/stock_lot_valuation/stock.py b/stock_lot_valuation/stock.py
index c0745b51f..a474d7bc4 100644
--- a/stock_lot_valuation/stock.py
+++ b/stock_lot_valuation/stock.py
@@ -29,10 +29,10 @@ class stock_production_lot(orm.Model):
         'standard_price': fields.float('Cost', digits_compute=dp.get_precision('Lot Price'),
             help="Cost price (in company currency) of the lot used for standard"
                 " stock valuation in accounting.",
-            groups="base.group_user"),
+                groups="base.group_user"),
         'cost_method': fields.selection([
-            ('standard','Standard Price'),
-            ('average','Average Price')
+            ('standard', 'Standard Price'),
+            ('average', 'Average Price')
             ], 'Costing Method',
             help="Standard Price: The cost price is manually updated at the end"
                 " of a specific period. \nAverage Price: The cost price is "