diff --git a/invoice.py b/invoice.py
index d1ced403e2..5aa0b2a251 100644
--- a/invoice.py
+++ b/invoice.py
@@ -2107,11 +2107,9 @@ class InvoiceLine(sequence_ordered(), ModelSQL, ModelView, TaxableMixin):
     @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]
 
     def get_rec_name(self, name):
         pool = Pool()