diff --git a/roles/ceph-osd/tasks/docker/start_docker_osd.yml b/roles/ceph-osd/tasks/docker/start_docker_osd.yml
index 604dd7635..3e5910d2c 100644
--- a/roles/ceph-osd/tasks/docker/start_docker_osd.yml
+++ b/roles/ceph-osd/tasks/docker/start_docker_osd.yml
@@ -43,7 +43,7 @@
 - name: prepare ceph osd disk with kv_store
   docker:
     image: "{{ ceph_osd_docker_username }}/{{ ceph_osd_docker_imagename }}"
-    name: "{{ ansible_hostname }}-osd-prepare-{{ item | regex_replace('/', '') }}"
+    name: "{{ ansible_hostname }}-osd-prepare-{{ item.0 | regex_replace('/', '') }}"
     net: host
     pid: host
     state: running