diff --git a/documentation/administrators b/documentation/administrators
index 7eae54e..083f8e3 100644
--- a/documentation/administrators
+++ b/documentation/administrators
@@ -141,7 +141,9 @@ that will generate a new privkey+cert.pem file and reload lighttpd.
     $ vim /etc/cron.weekly/clif-letsencrypt
     $ chmod +x /etc/cron.weekly/clif-letsencrypt
 
-    # Content of "clif-letsencrypt"
+Content of /etc/cron.weekly/clif-letsencrypt:
+
+    #!/bin/sh
     certbot renew --webroot -w /var/www/html
     cd /etc/letsencrypt/live/example.org
     cat privkey.pem cert.pem > privkey+cert.pem