diff --git a/neutron/db/db_base_plugin_common.py b/neutron/db/db_base_plugin_common.py
index fa76c9574e7..b00c88f1917 100644
--- a/neutron/db/db_base_plugin_common.py
+++ b/neutron/db/db_base_plugin_common.py
@@ -227,10 +227,10 @@ def _make_port_dict(self, port, fields=None,
                         bulk=False):
         if isinstance(port, port_obj.Port):
             port_data = port.db_obj
-            standard_attr_id = port.db_obj.standard_attr.id
+            standard_attr_id = port.db_obj.standard_attr_id
         else:
             port_data = port
-            standard_attr_id = port.standard_attr.id
+            standard_attr_id = port.standard_attr_id
 
         mac = port["mac_address"]
         if isinstance(mac, netaddr.EUI):