diff --git a/README.md b/README.md
index fda526b..9d470d3 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ host nextcloud.$(hostname)
 ```
 Change the hostname with the following command for example with dedyn/deSEC to myhost.dedyn.io:
 ```
-hostnamectl hostname myhost.dedyn.io
+su -c "hostnamectl hostname myhost.dedyn.io"
 ```
 
 # Quick-Install