diff --git a/move.py b/move.py
index 1c2cc918af..2d9dcad16b 100644
--- a/move.py
+++ b/move.py
@@ -363,7 +363,7 @@ class Move(Workflow, ModelSQL, ModelView):
 
     @classmethod
     def search_rec_name(cls, name, clause):
-        return [('product',) + clause[1:]]
+        return [('product',) + tuple(clause[1:])]
 
     def _update_product_cost_price(self, direction):
         """