diff --git a/addons/website_sale/models/sale_order.py b/addons/website_sale/models/sale_order.py
index 6fb01886d20..101b87fee49 100644
--- a/addons/website_sale/models/sale_order.py
+++ b/addons/website_sale/models/sale_order.py
@@ -70,7 +70,7 @@ class SaleOrder(models.Model):
         # is_abandoned domain possibilities
         if (operator not in expression.NEGATIVE_TERM_OPERATORS and value) or (operator in expression.NEGATIVE_TERM_OPERATORS and not value):
             return abandoned_domain
-        return expression.distribute_not(abandoned_domain)  # negative domain
+        return expression.distribute_not(['!'] + abandoned_domain)  # negative domain
 
     @api.multi
     def _cart_find_product_line(self, product_id=None, line_id=None, **kwargs):