diff --git a/terraform/gcp/modules/monitoring/prober/prober_alerts.tf b/terraform/gcp/modules/monitoring/prober/prober_alerts.tf
index da52197f6..d4d5abdfa 100644
--- a/terraform/gcp/modules/monitoring/prober/prober_alerts.tf
+++ b/terraform/gcp/modules/monitoring/prober/prober_alerts.tf
@@ -199,7 +199,7 @@ resource "google_monitoring_alert_policy" "prober_verification" {
     condition_threshold {
       aggregations {
         alignment_period   = "60s"
-        per_series_aligner = "ALIGN_SUM"
+        per_series_aligner = "ALIGN_DELTA"
       }
 
       comparison      = "COMPARISON_GT"
@@ -211,6 +211,8 @@ resource "google_monitoring_alert_policy" "prober_verification" {
         count   = "1"
         percent = "0"
       }
+
+      evaluation_missing_data = "EVALUATION_MISSING_DATA_INACTIVE"
     }
 
     display_name = "Kubernetes Container - prometheus/verification"