diff --git a/vars/main.yml b/vars/main.yml
index 0239ba6..eb7a656 100644
--- a/vars/main.yml
+++ b/vars/main.yml
@@ -1,4 +1,4 @@
 _full_docker_options: "{% if ansible_selinux.status == 'enabled' %}--selinux-enabled {% endif %}{{ container_registry_docker_options }}"
 _docker_daemon_config: |
   debug: {{ container_registry_debug }}
-  {% if container_registry_mirrors | length > 0 %}registry-mirrors: {{ container_registry_mirrors }}{% endif %}
+  {% if container_registry_mirrors | length > 0 %}registry-mirrors: [{{ container_registry_mirrors }}]{% endif %}