diff --git a/x-pack/plugins/alerting/server/task_runner/ad_hoc_task_runner.test.ts b/x-pack/plugins/alerting/server/task_runner/ad_hoc_task_runner.test.ts
index def73bf34e11e..c02b83630fb6b 100644
--- a/x-pack/plugins/alerting/server/task_runner/ad_hoc_task_runner.test.ts
+++ b/x-pack/plugins/alerting/server/task_runner/ad_hoc_task_runner.test.ts
@@ -131,6 +131,7 @@ const alertsService = new AlertsService({
   elasticsearchClientPromise: Promise.resolve(clusterClient),
   dataStreamAdapter: getDataStreamAdapter({ useDataStreamForAlerts }),
   elasticsearchAndSOAvailability$,
+  isServerless: false,
 });
 const backfillClient = backfillClientMock.create();
 const dataPlugin = dataPluginMock.createStartContract();
diff --git a/x-pack/plugins/alerting/server/task_runner/task_runner_alerts_client.test.ts b/x-pack/plugins/alerting/server/task_runner/task_runner_alerts_client.test.ts
index 4ffc41cc3bf02..02d94740ff75e 100644
--- a/x-pack/plugins/alerting/server/task_runner/task_runner_alerts_client.test.ts
+++ b/x-pack/plugins/alerting/server/task_runner/task_runner_alerts_client.test.ts
@@ -412,6 +412,7 @@ describe('Task Runner', () => {
           elasticsearchClientPromise: Promise.resolve(clusterClient),
           dataStreamAdapter: getDataStreamAdapter({ useDataStreamForAlerts }),
           elasticsearchAndSOAvailability$,
+          isServerless: false,
         });
         elasticsearchAndSOAvailability$.next(true);
 
@@ -544,6 +545,7 @@ describe('Task Runner', () => {
           elasticsearchClientPromise: Promise.resolve(clusterClient),
           dataStreamAdapter: getDataStreamAdapter({ useDataStreamForAlerts }),
           elasticsearchAndSOAvailability$,
+          isServerless: false,
         });
         elasticsearchAndSOAvailability$.next(true);