diff --git a/tests/app/v2/notifications/test_post_notifications.py b/tests/app/v2/notifications/test_post_notifications.py
index e58e93dbf..a2d99fb64 100644
--- a/tests/app/v2/notifications/test_post_notifications.py
+++ b/tests/app/v2/notifications/test_post_notifications.py
@@ -29,7 +29,7 @@ def test_post_sms_notification_returns_201(notify_api, sample_template, mocker,
             notifications = Notification.query.all()
             assert len(notifications) == 1
             notification_id = notifications[0].id
-            assert resp_json['id'] == notification_id
+            assert resp_json['id'] == str(notification_id)
             assert resp_json['reference'] == reference
             assert resp_json['content']['body'] == sample_template.content
             assert resp_json['content']['from_number'] == sample_template.service.sms_sender