diff --git a/x-pack/plugins/alerting/server/routes/update.test.ts b/x-pack/plugins/alerting/server/routes/update.test.ts
index 005367ef7979c..c3628617f861f 100644
--- a/x-pack/plugins/alerting/server/routes/update.test.ts
+++ b/x-pack/plugins/alerting/server/routes/update.test.ts
@@ -116,6 +116,7 @@ describe('updateAlertRoute', () => {
             "tags": Array [
               "bar",
             ],
+            "throttle": null,
           },
           "id": "1",
         },