diff --git a/deployment/ceph-ansible/ceph-osd.yaml b/deployment/ceph-ansible/ceph-osd.yaml
index 98a3aa8dce..8a83575a44 100644
--- a/deployment/ceph-ansible/ceph-osd.yaml
+++ b/deployment/ceph-ansible/ceph-osd.yaml
@@ -55,10 +55,7 @@ resources:
     properties:
       type: json
       value:
-        vars:
-          map_merge:
-          - osd_objectstore: filestore
-          - {get_param: CephAnsibleDisksConfig}
+        vars: {get_param: CephAnsibleDisksConfig}
 
 outputs:
   role_data: