diff --git a/ansible/roles/haproxy/templates/haproxy.cfg.j2 b/ansible/roles/haproxy/templates/haproxy.cfg.j2
index ffd42929fb..680a2220a2 100644
--- a/ansible/roles/haproxy/templates/haproxy.cfg.j2
+++ b/ansible/roles/haproxy/templates/haproxy.cfg.j2
@@ -144,7 +144,7 @@ listen nova_spicehtml5proxy
 listen nova_serialconsole_proxy
   bind {{ kolla_internal_vip_address }}:{{ nova_serialproxy_port }}
 {% for host in groups['nova-serialproxy'] %}
-  server {{ hostvars[host]['ansible_hostname'] }} {{ hostvars[host]['ansible_' + api_interface]['ipv4']['address'] }}:{{ nova_serialproxy_port }} check inter 2000 rise 2 fall 5
+  server {{ hostvars[host]['ansible_hostname'] }} {{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ nova_serialproxy_port }} check inter 2000 rise 2 fall 5
 {% endfor %}
 {% endif %}
 {% if haproxy_enable_external_vip | bool %}