diff --git a/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/impl_idl_ovn.py b/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/impl_idl_ovn.py
index 996cf2bb9f5..a0dd2fe489a 100644
--- a/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/impl_idl_ovn.py
+++ b/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/impl_idl_ovn.py
@@ -56,6 +56,7 @@ class OvnNbTransaction(idl_trans.Transaction):
 # and therefor allows networking-ovn to manage connection scope on its own
 class Backend(ovs_idl.Backend):
     lookup_table = {}
+    ovsdb_connection = None
 
     def __init__(self, connection):
         self.ovsdb_connection = connection