diff --git a/tests/unit/scenarios/neutron/test_utils.py b/tests/unit/scenarios/neutron/test_utils.py
index df768c36..7fadbc42 100644
--- a/tests/unit/scenarios/neutron/test_utils.py
+++ b/tests/unit/scenarios/neutron/test_utils.py
@@ -1330,6 +1330,8 @@ class NeutronScenarioTestCase(test.ScenarioTestCase):
         self.scenario._list_ports_by_device_id(device_id)
         self.clients("neutron").list_ports.assert_called_once_with(
             device_id=device_id)
+        self._test_atomic_action_timer(self.scenario.atomic_actions(),
+                                       "neutron.list_ports_by_device_id")
 
 
 class NeutronScenarioFunctionalTestCase(test.FakeClientsScenarioTestCase):