diff --git a/ansible/roles/owner/tasks/main.yml b/ansible/roles/owner/tasks/main.yml
index 5f35236..fb3e2aa 100644
--- a/ansible/roles/owner/tasks/main.yml
+++ b/ansible/roles/owner/tasks/main.yml
@@ -23,7 +23,7 @@
     key: '{{ item }}'
     state: present
   with_items: '{{ owner_ssh_keys }}'
-  when: owner_ssh_keys
+  when: owner_ssh_keys | bool
 
 - name: 'Prepare env variables.'
   set_fact: