diff --git a/docs/post_installation/firststeps-disable_ipv6.en.md b/docs/post_installation/firststeps-disable_ipv6.en.md
index 27336d93d..8c9322486 100644
--- a/docs/post_installation/firststeps-disable_ipv6.en.md
+++ b/docs/post_installation/firststeps-disable_ipv6.en.md
@@ -89,8 +89,8 @@ Fix the following NGINX, Dovecot and php-fpm config files
 ```
 sed -i '/::/d' data/conf/nginx/listen_*
 sed -i '/::/d' data/conf/nginx/templates/listen*
+sed -i '/::/d' data/conf/nginx/dynmaps.conf
 sed -i 's/,\[::\]//g' data/conf/dovecot/dovecot.conf
-sed -i 's/\[::\]://g' data/conf/nginx/dynmaps.conf
 sed -i 's/\[::\]://g' data/conf/phpfpm/php-fpm.d/pools.conf
 ```