diff --git a/defaults/main.yml b/defaults/main.yml
index 7128dc5..fa062c5 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -13,7 +13,7 @@ grafana_conf:
   - {section: 'server', option: 'http_addr', value: '{{ grafana_bind_ip_address }}', state: present}
   - {section: 'server', option: 'http_port', value: '{{ grafana_http_port }}', state: present}
   - {section: 'server', option: 'domain', value: '{{ grafana_domain_name }}', state: present}
-  - {section: 'server', option: 'enforce_domain', value: '{{ grafana_enforce_dns_name }}', state: present}
+  - {section: 'server', option: 'enforce_domain', value: '{{ grafana_enforce_dom_name | lower }}', state: present}
   - {section: 'database', option: 'type', value: '{{ grafana_db_type }}', state: present}
   - {section: 'database', option: 'host', value: '{{ grafana_db_hostport }}', state: present}
   - {section: 'database', option: 'name', value: '{{ grafana_db_name }}', state: present}