diff --git a/puppet/services/horizon.yaml b/puppet/services/horizon.yaml
index 092d072060..1f97b8bad4 100644
--- a/puppet/services/horizon.yaml
+++ b/puppet/services/horizon.yaml
@@ -89,7 +89,6 @@ outputs:
           horizon::cache_backend: django.core.cache.backends.memcached.MemcachedCache
           horizon::django_session_engine: 'django.contrib.sessions.backends.cache'
           horizon::vhost_extra_params:
-            add_listen: false
             priority: 10
             access_log_format: '%a %l %u %t \"%r\" %>s %b \"%%{}{Referer}i\" \"%%{}{User-Agent}i\"'
             options: ['FollowSymLinks','MultiViews']