diff --git a/roles/ceph-rbd-mirror/tasks/configure_mirroring.yml b/roles/ceph-rbd-mirror/tasks/configure_mirroring.yml
index 07a1384fd1..34f25ca8ad 100644
--- a/roles/ceph-rbd-mirror/tasks/configure_mirroring.yml
+++ b/roles/ceph-rbd-mirror/tasks/configure_mirroring.yml
@@ -11,4 +11,4 @@
 - name: add a mirroring peer
   command: "{{ container_exec_cmd | default('') }} rbd --cluster {{ cluster }} --keyring /etc/ceph/{{ cluster }}.client.rbd-mirror.{{ ansible_facts['hostname'] }}.keyring --name client.rbd-mirror.{{ ansible_facts['hostname'] }} mirror pool peer add {{ ceph_rbd_mirror_pool }} {{ ceph_rbd_mirror_remote_user }}@{{ ceph_rbd_mirror_remote_cluster }}"
   changed_when: false
-  when: ceph_rbd_mirror_remote_user in mirror_peer.stdout
+  when: ceph_rbd_mirror_remote_user not in mirror_peer.stdout