diff --git a/volumes/cephfs/secret/ceph-secret.yaml b/volumes/cephfs/secret/ceph-secret.yaml
index 711614b5..89af09bd 100644
--- a/volumes/cephfs/secret/ceph-secret.yaml
+++ b/volumes/cephfs/secret/ceph-secret.yaml
@@ -2,5 +2,5 @@ apiVersion: v1
 kind: Secret
 metadata:
   name: ceph-secret
-data:
+stringData:
   key: QVFCMTZWMVZvRjVtRXhBQTVrQ1FzN2JCajhWVUxSdzI2Qzg0SEE9PQ==  # the base64-encoded string of the already-base64-encoded key `ceph auth get-key` outputs