diff --git a/clusters/ontime-dev-doks/configs/storageclass.yaml b/clusters/ontime-dev-doks/configs/storageclass.yaml
index df762d3..256dcca 100644
--- a/clusters/ontime-dev-doks/configs/storageclass.yaml
+++ b/clusters/ontime-dev-doks/configs/storageclass.yaml
@@ -3,6 +3,8 @@ kind: StorageClass
 apiVersion: storage.k8s.io/v1
 metadata:
   name: csi-s3
+  annotations:
+    storageclass.kubernetes.io/is-default-class: "false"
 provisioner: ru.yandex.s3.csi
 reclaimPolicy: Retain
 allowVolumeExpansion: true
diff --git a/clusters/ontime-jwetzell/configs/storageclass.yaml b/clusters/ontime-jwetzell/configs/storageclass.yaml
index df762d3..256dcca 100644
--- a/clusters/ontime-jwetzell/configs/storageclass.yaml
+++ b/clusters/ontime-jwetzell/configs/storageclass.yaml
@@ -3,6 +3,8 @@ kind: StorageClass
 apiVersion: storage.k8s.io/v1
 metadata:
   name: csi-s3
+  annotations:
+    storageclass.kubernetes.io/is-default-class: "false"
 provisioner: ru.yandex.s3.csi
 reclaimPolicy: Retain
 allowVolumeExpansion: true