diff --git a/0_Setup.sh b/0_Setup.sh
index d13199b..4d1f351 100755
--- a/0_Setup.sh
+++ b/0_Setup.sh
@@ -54,7 +54,17 @@ answer=${answer:-n}
 if [[ "$answer" == "j" ]] || [[ "$answer" == "y" ]]; then
     # Multilib-Repository aktivieren
     echo "🔄 Aktiviere Multilib-Repository..."
-    sed -i '/\[multilib\]/,/\[\/multilib\]/s/^#//g' /etc/pacman.conf
+    # Zeilen einkommentieren, falls sie auskommentiert sind
+    if grep -q "^\[multilib\]" /etc/pacman.conf && grep -q "#Include = /etc/pacman.d/mirrorlist" /etc/pacman.conf; then
+        sudo sed -i 's/#\[multilib\]/\[multilib\]/g' /etc/pacman.conf
+        sudo sed -i 's/#Include = \/etc\/pacman.d\/mirrorlist/Include = \/etc\/pacman.d\/mirrorlist/g' /etc/pacman.conf
+    fi
+
+    # Falls der Block nicht vorhanden ist, füge ihn hinzu
+    if ! grep -q "^\[multilib\]" /etc/pacman.conf; then
+        echo "[multilib]" | sudo tee -a /etc/pacman.conf
+        echo "Include = /etc/pacman.d/mirrorlist" | sudo tee -a /etc/pacman.conf
+    fi
 
     # Paketdatenbank aktualisieren
     echo "🔄 Aktualisiere die Paketdatenbank..."