diff --git a/Maintenance/Update.sh b/Maintenance/Update.sh
index 1bd53fb..3c5200c 100755
--- a/Maintenance/Update.sh
+++ b/Maintenance/Update.sh
@@ -12,7 +12,8 @@ if [[ $EUID -ne 0 ]]; then
 fi
 
 # === Variablen ===
-USER="$SUDO_USER"
+WHOAMI=$(whoami)
+USER=${SUDO_USER:-$WHOAMI}
 
 # === Skript-Funktionen ===
 cleanup() {