diff --git a/cluster/addons/prometheus/alertmanager-pvc.yaml b/cluster/addons/prometheus/alertmanager-pvc.yaml
index fecbe390586..bc83c5f4761 100644
--- a/cluster/addons/prometheus/alertmanager-pvc.yaml
+++ b/cluster/addons/prometheus/alertmanager-pvc.yaml
@@ -7,6 +7,7 @@ metadata:
     kubernetes.io/cluster-service: "true"
     addonmanager.kubernetes.io/mode: EnsureExists
 spec:
+  storageClassName: standard
   accessModes:
     - ReadWriteOnce
   resources: