diff --git a/roles/tripleo-ssh-known-hosts/tasks/main.yml b/roles/tripleo-ssh-known-hosts/tasks/main.yml
index 77e2e82f5..6afa4bfc5 100644
--- a/roles/tripleo-ssh-known-hosts/tasks/main.yml
+++ b/roles/tripleo-ssh-known-hosts/tasks/main.yml
@@ -1,6 +1,7 @@
 ---
 - name: Add host keys in /etc/ssh/ssh_known_hosts for live/cold-migration
   become: true
+  check_mode: no
   block:
     # Workaround https://bugs.launchpad.net/tripleo/+bug/1810932
     # Ansible modules perform a replace instead of in-place modification.