diff --git a/vitrage_tempest_tests/tests/api/event/test_events.py b/vitrage_tempest_tests/tests/api/event/test_events.py
index ea2c4c3b4..d00c2ef9b 100644
--- a/vitrage_tempest_tests/tests/api/event/test_events.py
+++ b/vitrage_tempest_tests/tests/api/event/test_events.py
@@ -57,7 +57,7 @@ class TestEvents(base.BaseTestCase):
             self.vitrage_client.event.post(event_time, event_type, details)
 
             # list all alarms
-            api_alarms = self.vitrage_client.alarm.list(vitrage_id=None,
+            api_alarms = self.vitrage_client.alarm.list(vitrage_id='all',
                                                         all_tenants=False)
 
             # expect to get a 'host down alarm', generated by Doctor datasource