diff --git a/deploy/kubernetes/v1.22/snapshotter/volume-snapshot-class.yml b/deploy/kubernetes/v1.22/snapshotter/volume-snapshot-class.yml
index f6dba20..2767942 100644
--- a/deploy/kubernetes/v1.22/snapshotter/volume-snapshot-class.yml
+++ b/deploy/kubernetes/v1.22/snapshotter/volume-snapshot-class.yml
@@ -7,7 +7,7 @@ metadata:
   labels:
     velero.io/csi-volumesnapshot-class: "true"
 driver: csi.san.synology.com
-deletionPolicy: Delete
+deletionPolicy: Retain
 # parameters:
 #   description: 'Kubernetes CSI'
 #   is_locked: 'false'
diff --git a/deploy/kubernetes/v1.22/storage-class.yml b/deploy/kubernetes/v1.22/storage-class.yml
index ff59c87..ba0e5c6 100644
--- a/deploy/kubernetes/v1.22/storage-class.yml
+++ b/deploy/kubernetes/v1.22/storage-class.yml
@@ -2,8 +2,8 @@ apiVersion: storage.k8s.io/v1
 kind: StorageClass
 metadata:
   name: synology-iscsi-storage
-  # annotations:
-  #   storageclass.kubernetes.io/is-default-class: "true"
+  annotations:
+    storageclass.kubernetes.io/is-default-class: "true"
 provisioner: csi.san.synology.com
 # if all params are empty, synology CSI will choose an available location to create volume
 # parameters: