diff --git a/Setup-Computer-Debian-12.md b/Setup-Computer-Debian-12.md
index 5c3b911..b36fab5 100644
--- a/Setup-Computer-Debian-12.md
+++ b/Setup-Computer-Debian-12.md
@@ -179,7 +179,7 @@ sudo ./install.sh
 # use your config file
 sudo cp src/shellbox-PolLux.conf /etc/shellbox.conf
 
-shellbox start all
+sudo shellbox start all
 
 
 # to connect to orocos