diff --git a/sale.py b/sale.py
index d6a1d39645..bb7ad97d69 100644
--- a/sale.py
+++ b/sale.py
@@ -614,11 +614,9 @@ class Sale(
     @classmethod
     def get_origin(cls):
         Model = Pool().get('ir.model')
+        get_name = Model.get_name
         models = cls._get_origin()
-        models = Model.search([
-                ('model', 'in', models),
-                ])
-        return [(None, '')] + [(m.model, m.name) for m in models]
+        return [(None, '')] + [(m, get_name(m)) for m in models]
 
     @property
     def report_address(self):