diff --git a/scripts/Arch/OS/setup.sh b/scripts/Arch/OS/setup.sh
index 8fa26503..a435e4e8 100755
--- a/scripts/Arch/OS/setup.sh
+++ b/scripts/Arch/OS/setup.sh
@@ -5,9 +5,9 @@ ARCH_TIMEZONE="${ARCH_TIMEZONE:-Europe/Zurich}";
 ARCH_DISK="${ARCH_DISK}";
 ARCH_HOSTNAME="${ARCH_HOSTNAME}";
 ARCH_MOUNT_ROOT="${ARCH_MOUNT_ROOT:-"/mnt"}";
-ARCH_LANG="en_US.UTF-8";
-ARCH_KEYMAP="de_CH-latin1";
-LOCALE_PATTERN="\(de_CH\|en_US\)";
+ARCH_LANG="${ARCH_LANG:-"en_US.UTF-8"}";
+ARCH_KEYMAP="${ARCH_KEYMAP:-"de_CH-latin1"}";
+LOCALE_PATTERN="${LOCALE_PATTERN:-"\(de_CH\|en_US\)"}";
 
 USER_NAME="${USER_NAME:-manuel}";
 USER_DISPLAYNAME="${USER_DISPLAYNAME}";