diff --git a/addons/website_sale/models/product.py b/addons/website_sale/models/product.py
index 17a0943fa38..116822f2984 100644
--- a/addons/website_sale/models/product.py
+++ b/addons/website_sale/models/product.py
@@ -19,6 +19,7 @@
 #
 ##############################################################################
 
+from openerp import tools
 from openerp.osv import osv, fields
 
 class product_style(osv.Model):