diff --git a/addons/sale/sale.py b/addons/sale/sale.py
index 7911257f8b9..9fbdac14a23 100644
--- a/addons/sale/sale.py
+++ b/addons/sale/sale.py
@@ -20,11 +20,11 @@
 ##############################################################################
 
 import time
+from datetime import datetime
 from dateutil.relativedelta import relativedelta
 
 import netsvc
 from osv import fields, osv
-from datetime import datetime
 from tools import config
 from tools.translate import _