diff --git a/data/conf/nginx/templates/nginx.conf.j2 b/data/conf/nginx/templates/nginx.conf.j2
index 08a85a144e..8f7e5a24f0 100644
--- a/data/conf/nginx/templates/nginx.conf.j2
+++ b/data/conf/nginx/templates/nginx.conf.j2
@@ -47,7 +47,9 @@ http {
     server {
         root /web;
         listen {{ HTTP_PORT }} default_server;
+        {% if ENABLE_IPV6 %}
         listen [::]:{{ HTTP_PORT }} default_server;
+        {%endif%}
 
         server_name {{ MAILCOW_HOSTNAME }} autodiscover.* autoconfig.* mta-sts.* {{ ADDITIONAL_SERVER_NAMES | join(' ') }};