diff --git a/move.py b/move.py
index 6246a3901f..067c9d7b53 100644
--- a/move.py
+++ b/move.py
@@ -927,7 +927,7 @@ class Line(ModelSQL, ModelView):
     def search_move_field(self, name, clause):
         if name == 'move_state':
             name = 'state'
-        return [('move.' + name,) + clause[1:]]
+        return [('move.' + name,) + tuple(clause[1:])]
 
     def query_get(self, obj='l'):
         '''