diff --git a/tests/app/main/views/test_platform_admin.py b/tests/app/main/views/test_platform_admin.py
index 3749a2a0f..dd0d47f13 100644
--- a/tests/app/main/views/test_platform_admin.py
+++ b/tests/app/main/views/test_platform_admin.py
@@ -666,4 +666,4 @@ def test_platform_admin_list_complaints(
     assert response.status_code == 200
     resp_data = response.get_data(as_text=True)
     assert 'Email complaints' in resp_data
-    mock.assert_called_once()
+    assert mock.called