diff --git a/inventory/group_vars/horizon_all/haproxy_service.yml b/inventory/group_vars/horizon_all/haproxy_service.yml
index 2f7cb9dc36..431e4442cc 100644
--- a/inventory/group_vars/horizon_all/haproxy_service.yml
+++ b/inventory/group_vars/horizon_all/haproxy_service.yml
@@ -33,7 +33,7 @@ haproxy_horizon_service:
   haproxy_balance_type: http
   haproxy_balance_alg: source
   haproxy_backend_httpcheck_options:
-    - 'send hdr User-Agent "osa-haproxy-healthcheck" meth HEAD uri {{ horizon_webroot }}/auth/login/'
+    - 'send hdr User-Agent "osa-haproxy-healthcheck" meth HEAD uri {{ horizon_webroot.rstrip("/") }}/auth/login/'
   haproxy_service_enabled: "{{ groups['horizon_all'] is defined and groups['horizon_all'] | length > 0 }}"
   haproxy_backend_ssl: "{{ horizon_backend_ssl | default(openstack_service_backend_ssl) }}"
   haproxy_backend_ca: "{{ horizon_haproxy_backend_ca | default(openstack_haproxy_backend_ca) }}"