diff --git a/party.py b/party.py
index 8f14d02..704ff1e 100644
--- a/party.py
+++ b/party.py
@@ -2,7 +2,6 @@
 # this repository contains the full copyright notices and license terms.
 from trytond.model import ModelSQL, fields
 from trytond.pool import PoolMeta, Pool
-from trytond import backend
 from trytond.tools.multivalue import migrate_property
 from trytond.modules.company.model import CompanyValueMixin