diff --git a/classes/cluster/virtual-mcp-pike-dvr-ceph-rgw/ceph/common.yml b/classes/cluster/virtual-mcp-pike-dvr-ceph-rgw/ceph/common.yml
index 318a318..857c6e5 100644
--- a/classes/cluster/virtual-mcp-pike-dvr-ceph-rgw/ceph/common.yml
+++ b/classes/cluster/virtual-mcp-pike-dvr-ceph-rgw/ceph/common.yml
@@ -11,7 +11,7 @@
           name: ${_param:glance_storage_user}
           caps:
             mon: "allow r"
-            osd: "allow class-read object_prefix rdb_children, allow rwx pool=images"
+            osd: "allow class-read object_prefix rbd_children, allow rwx pool=images"
         cinder:
           name: ${_param:cinder_storage_user}
           caps: