diff --git a/gwcelery/tests/test_tasks_external_triggers.py b/gwcelery/tests/test_tasks_external_triggers.py
index 2f9a1636d143157778a71baa74e29bbb2523e6cb..b99d859c50cf79cf277511f860f2ad2d50c9c3dd 100644
--- a/gwcelery/tests/test_tasks_external_triggers.py
+++ b/gwcelery/tests/test_tasks_external_triggers.py
@@ -360,7 +360,8 @@ def test_handle_skymap_combine(mock_create_combined_skymap,
                  "search": "GRB"}
              }
     external_triggers.handle_grb_igwn_alert(alert)
-    mock_create_combined_skymap.assert_called_once_with('S1234', 'E1212')
+    mock_create_combined_skymap.assert_called_once_with(
+        'S1234', 'E1212', gw_moc=True)
 
 
 @patch('gwcelery.tasks.detchar.dqr_json', return_value='dqrjson')