diff --git a/dragonflow/tests/unit/test_migration_app.py b/dragonflow/tests/unit/test_migration_app.py
index 80da83181..832415509 100644
--- a/dragonflow/tests/unit/test_migration_app.py
+++ b/dragonflow/tests/unit/test_migration_app.py
@@ -33,7 +33,7 @@ class TestMigrationApp(test_app_base.DFAppTestBase):
         self.controller.db_store.update(fake_lswitch)
         self.controller.db_store.update(lport)
         self.controller.vswitch_api.get_chassis_ofport.return_value = 3
-        self.controller.vswitch_api.get_port_ofport_by_id.retrun_value = 2
+        self.controller.vswitch_api.get_port_ofport_by_id.return_value = 2
 
         mock_update_patch = mock.patch.object(
                 self.controller.db_store,