diff --git a/config.scm b/config.scm
index 293bfb3..a4d19b4 100644
--- a/config.scm
+++ b/config.scm
@@ -326,8 +326,8 @@ SUBSYSTEM==\"usb_device\", GROUP=\"spice\", MODE=\"0660\"
     (cons*
       (file-system
         (mount-point "/boot/efi")
-          (device "/dev/CHANGE_THIS_DISK")
-          (type "vfat"))
+        (device (uuid "CHANGE_THIS_DISK" 'fat32))
+        (type "vfat"))
       (file-system
         (mount-point "/")
           (device "/dev/mapper/ROOT")