diff --git a/setup/arch-auto-install-new-cgpt.sh.old b/setup/arch-auto-install-new-cgpt.sh.old
index cc3bdd3..5eb13eb 100755
--- a/setup/arch-auto-install-new-cgpt.sh.old
+++ b/setup/arch-auto-install-new-cgpt.sh.old
@@ -132,7 +132,7 @@ if [[ "$FIDO_ROOT" == "YES" ]]; then
     mkinitcpio -P
 
     # GRUB config for encrypted root
-    UUID=\$(blkid -s UUID -o value $ROOT_PART)
+    UUID=\$(blkid -s UUID -o value "${ROOT_PART}")
     sed -i "s|GRUB_CMDLINE_LINUX=.*|GRUB_CMDLINE_LINUX=\"cryptdevice=UUID=\$UUID:cryptroot root=/dev/mapper/cryptroot\"|" /etc/default/grub
 fi
 grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=GRUB