diff --git a/addons/sale/sale.py b/addons/sale/sale.py
index 97b5be91848..40e3605880f 100644
--- a/addons/sale/sale.py
+++ b/addons/sale/sale.py
@@ -1065,7 +1065,7 @@ class sale_order_line(osv.osv):
                     'title': _('Picking Information !'),
                     'message': warn_msg
                     }
-            result['product_uom_qty'] = qty
+            result['product_uom_qty'] = pack.qty
 
         uom2 = False
         if uom: