diff --git a/x-pack/plugins/infra/server/lib/alerting/metric_threshold/metric_threshold_executor.test.ts b/x-pack/plugins/infra/server/lib/alerting/metric_threshold/metric_threshold_executor.test.ts
index 5a75b18e47590c..1e948cf1cd82cf 100644
--- a/x-pack/plugins/infra/server/lib/alerting/metric_threshold/metric_threshold_executor.test.ts
+++ b/x-pack/plugins/infra/server/lib/alerting/metric_threshold/metric_threshold_executor.test.ts
@@ -747,6 +747,9 @@ describe('The metric threshold alert type', () => {
 });
 
 const createMockStaticConfiguration = (sources: any) => ({
+  alerting: {
+    group_by_page_size: 100,
+  },
   inventory: {
     compositeSize: 2000,
   },