diff --git a/x-pack/plugins/monitoring/server/lib/alerts/fetch_legacy_alerts.test.ts b/x-pack/plugins/monitoring/server/lib/alerts/fetch_legacy_alerts.test.ts
index a3743a8ff206f..5055017051816 100644
--- a/x-pack/plugins/monitoring/server/lib/alerts/fetch_legacy_alerts.test.ts
+++ b/x-pack/plugins/monitoring/server/lib/alerts/fetch_legacy_alerts.test.ts
@@ -47,6 +47,7 @@ describe('fetchLegacyAlerts', () => {
         message,
         metadata,
         nodes,
+        nodeName: '',
         prefix,
       },
     ]);