diff --git a/config/piler-ssl.yml b/config/piler-ssl.yml
index 4d1fe00..5c5a44b 100644
--- a/config/piler-ssl.yml
+++ b/config/piler-ssl.yml
@@ -13,6 +13,8 @@ services:
       - ./nginx-data/vhost.d:/etc/nginx/vhost.d
       - ./nginx-data/html:/usr/share/nginx/html
       - /var/run/docker.sock:/tmp/docker.sock:ro
+    environment:
+      - ENABLE_IPV6=${NGINX_ENABLE_IPV6:-false}
 
   nginx-letsencrypt:
     image: jrcs/letsencrypt-nginx-proxy-companion
@@ -27,7 +29,6 @@ services:
       - ./acme-data:/etc/acme.sh
     environment:
       - LETSENCRYPT_EMAIL=${LETSENCRYPT_EMAIL}
-      - ENABLE_IPV6=${NGINX_ENABLE_IPV6:-false}
 
   mysql:
     image: mariadb:${MARIA_DB_VERSION}
diff --git a/piler.conf.example b/piler.conf.example
index e6421d4..df02c2f 100644
--- a/piler.conf.example
+++ b/piler.conf.example
@@ -56,7 +56,7 @@ LETSENCRYPT_TEST=false
 # ------------ Nginx Settings -------------
 
 # Enables NGINX to listen on IPv6 too
-NGINX_ENABLE_IPv6=true
+NGINX_ENABLE_IPV6=true
 
 # ------ optional Mailcow Settings --------