diff --git a/x-pack/plugins/alerts/server/alerts_client/tests/get_alert_instance_summary.test.ts b/x-pack/plugins/alerts/server/alerts_client/tests/get_alert_instance_summary.test.ts
index b7c00c1eff828..6c0612df030dd 100644
--- a/x-pack/plugins/alerts/server/alerts_client/tests/get_alert_instance_summary.test.ts
+++ b/x-pack/plugins/alerts/server/alerts_client/tests/get_alert_instance_summary.test.ts
@@ -199,7 +199,9 @@ describe('getAlertInstanceSummary()', () => {
     expect(eventLogClient.findEventsBySavedObjectIds.mock.calls[0]).toMatchInlineSnapshot(`
       Array [
         "alert",
-        Array ["1"],
+        Array [
+          "1",
+        ],
         Object {
           "end": "2019-02-12T21:01:22.479Z",
           "page": 1,