diff --git a/alerts/resource_alerts.libsonnet b/alerts/resource_alerts.libsonnet
index 46225afcf..616776f12 100644
--- a/alerts/resource_alerts.libsonnet
+++ b/alerts/resource_alerts.libsonnet
@@ -199,9 +199,9 @@
           {
             alert: 'CPUThrottlingHigh',
             expr: |||
-              sum(increase(container_cpu_cfs_throttled_periods_total{container!="", %(cpuThrottlingSelector)s}[5m])) by (container, pod, namespace)
+              sum(increase(container_cpu_cfs_throttled_periods_total{container!="", %(cpuThrottlingSelector)s}[5m])) by (%(clusterLabel)s, container, pod, namespace)
                 /
-              sum(increase(container_cpu_cfs_periods_total{%(cpuThrottlingSelector)s}[5m])) by (container, pod, namespace)
+              sum(increase(container_cpu_cfs_periods_total{%(cpuThrottlingSelector)s}[5m])) by (%(clusterLabel)s, container, pod, namespace)
                 > ( %(cpuThrottlingPercent)s / 100 )
             ||| % $._config,
             'for': '15m',