diff --git a/Setup/5_DomainLogin.sh b/Setup/5_DomainLogin.sh
index c585bf9..1f85e8f 100755
--- a/Setup/5_DomainLogin.sh
+++ b/Setup/5_DomainLogin.sh
@@ -11,11 +11,15 @@ SDDM_CONF_DIR="/etc/sddm.conf.d"
 SDDM_CUSTOM_CONF="$SDDM_CONF_DIR/custom.conf"
 mkdir -p "$SDDM_CONF_DIR"
 
-cat <<EOF > "$SDDM_CUSTOM_CONF"
+# Bestehende Konfiguration sichern und anpassen
+if [[ -f "$SDDM_CUSTOM_CONF" ]]; then
+    sed -i '/MaximumUid/d' "$SDDM_CUSTOM_CONF"
+else
+    cat <<EOF > "$SDDM_CUSTOM_CONF"
 [Users]
-MaximumUid=2000000
 HideShells=/sbin/nologin,/bin/false
 EOF
+fi
 
 # SSSD-Konfiguration anpassen, falls die Datei existiert
 SSSD_CONF="/etc/sssd/sssd.conf"