diff --git a/addons/stock/procurement.py b/addons/stock/procurement.py
index d6f9875459d..b5f785d245e 100644
--- a/addons/stock/procurement.py
+++ b/addons/stock/procurement.py
@@ -56,7 +56,7 @@ class procurement_order(osv.osv):
 
     def _find_suitable_rule(self, cr, uid, procurement, context=None):
         rule_id = super(procurement_order, self)._find_suitable_rule(cr, uid, procurement, context=context)
-        if not res:
+        if not rule_id:
             rule_id = self._search_suitable_rule(cr, uid, procurement, [('action', '=', 'move'), ('location_id', '=', procurement.location_id.id)], context=context)
             rule_id = rule_id and rule_id[0] or False
         return rule_id