diff --git a/roles/ceph-common/tasks/facts.yml b/roles/ceph-common/tasks/facts.yml
index 902be2e9ce..76ae7a9a47 100644
--- a/roles/ceph-common/tasks/facts.yml
+++ b/roles/ceph-common/tasks/facts.yml
@@ -11,7 +11,7 @@
   failed_when: false
   always_run: yes
   register: ceph_current_fsid
-  delegate_to: "{{ groups.mons[0] }}"
+  delegate_to: "{{ groups[mon_group_name][0] }}"
 
 - set_fact:
     fsid: "{{ ceph_current_fsid.stdout }}"