diff --git a/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/ovn_client.py b/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/ovn_client.py
index c5f59b752bc..9ad4db808ac 100644
--- a/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/ovn_client.py
+++ b/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/ovn_client.py
@@ -1966,7 +1966,7 @@ class OVNClient(object):
         dhcp_options = self._nb_idl.get_subnet_dhcp_options(
             subnet_id, with_ports=True)
 
-        if dhcp_options['subnet'] is not None:
+        if dhcp_options['subnet']:
             txn.add(self._nb_idl.delete_dhcp_options(
                 dhcp_options['subnet']['uuid']))