diff --git a/scripts/db_migrator.py b/scripts/db_migrator.py
index 209dfe5cae..5c1cf230a3 100755
--- a/scripts/db_migrator.py
+++ b/scripts/db_migrator.py
@@ -449,12 +449,12 @@ def migrate_config_db_port_table_for_switchport_mode(self):
         vlan_member_table = self.configDB.get_table('VLAN_MEMBER')
         for key, value in port_table.items():
             if 'mode' in value:
-                self.configDB.set('{}|{}'.format("PORT", key), 'mode', value['mode'])
+                self.configDB.set(self.configDB.CONFIG_DB, '{}|{}'.format("PORT", key), 'mode', value['mode'])
             else:
                 if key in vlan_member_table.keys():
-                    self.configDB.set('{}|{}'.format("PORT", key), 'mode', 'trunk')
+                    self.configDB.set(self.configDB.CONFIG_DB, '{}|{}'.format("PORT", key), 'mode', 'trunk')
                 else:
-                    self.configDB.set('{}|{}'.format('PORT', key), 'mode', 'routed')
+                    self.configDB.set(self.configDB.CONFIG_DB, '{}|{}'.format('PORT', key), 'mode', 'routed')
 
     def migrate_qos_db_fieldval_reference_remove(self, table_list, db, db_num, db_delimeter):
         for pair in table_list: