diff --git a/contrib/nginx/zammad_ssl.conf b/contrib/nginx/zammad_ssl.conf
index 009d39dd8..eb74cd361 100644
--- a/contrib/nginx/zammad_ssl.conf
+++ b/contrib/nginx/zammad_ssl.conf
@@ -9,60 +9,60 @@
 #
 
 upstream zammad-railsserver {
-    server localhost:3000;
+  server localhost:3000;
 }
 
 upstream zammad-websocket {
-    server localhost:6042;
+  server localhost:6042;
 }
 
 server {
-    listen 80;
+  listen 80;
 
-    server_name example.com www.example.com;
+  server_name example.com www.example.com;
 
-    access_log /var/log/nginx/zammad.access.log;
-    error_log  /var/log/nginx/zammad.error.log;
+  access_log /var/log/nginx/zammad.access.log;
+  error_log /var/log/nginx/zammad.error.log;
 
-    location /.well-known/ {
-        root /var/www/html;
-    }
+  location /.well-known/ {
+    root /var/www/html;
+  }
 
-    location / {
-        rewrite ^/(.*)$ https://example.com/$1 permanent;
-    }
+  location / {
+    rewrite ^/(.*)$ https://example.com/$1 permanent;
+  }
 }
 
 
 server {
-    listen 443 ssl http2;
+  listen 443 ssl http2;
 
-    server_name example.com;
+  server_name example.com;
 
-    ssl_certificate /etc/nginx/ssl/your_cert.crt;
-    ssl_certificate_key /etc/nginx/ssl/your_private_key.key;
+  ssl_certificate /etc/nginx/ssl/your_cert.crt;
+  ssl_certificate_key /etc/nginx/ssl/your_private_key.key;
 
-    ssl_protocols TLSv1.2;
+  ssl_protocols TLSv1.2;
 
-    ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH';
+  ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH';
 
-    ssl_dhparam /etc/nginx/ssl/dhparam.pem;
+  ssl_dhparam /etc/nginx/ssl/dhparam.pem;
 
-    ssl_prefer_server_ciphers on;
+  ssl_prefer_server_ciphers on;
 
-    ssl_session_cache shared:SSL:10m;
-    ssl_session_timeout 180m;
+  ssl_session_cache shared:SSL:10m;
+  ssl_session_timeout 180m;
 
-    ssl_stapling on;
-    ssl_stapling_verify on;
+  ssl_stapling on;
+  ssl_stapling_verify on;
 
-    ssl_trusted_certificate /etc/nginx/ssl/your_cert.crt;
+  ssl_trusted_certificate /etc/nginx/ssl/your_cert.crt;
 
-    resolver 8.8.8.8 8.8.4.4;
+  resolver 8.8.8.8 8.8.4.4;
 
-    add_header Strict-Transport-Security "max-age=31536000" always;
+  add_header Strict-Transport-Security "max-age=31536000" always;
 
- location = /robots.txt  {
+    location = /robots.txt  {
         access_log off; log_not_found off;
     }
 
@@ -97,8 +97,8 @@ server {
         proxy_read_timeout 180;
         proxy_pass http://zammad-railsserver;
 
-        gzip on;
-        gzip_types text/plain text/xml text/css image/svg+xml application/javascript application/x-javascript application/json application/xml;
-        gzip_proxied any;
-    }
+    gzip on;
+    gzip_types text/plain text/xml text/css image/svg+xml application/javascript application/x-javascript application/json application/xml;
+    gzip_proxied any;
+  }
 }