diff --git a/buildroot-external/board/ova/barebox-env/boot/system1 b/buildroot-external/board/ova/barebox-env/boot/system1
index c917a2f05..3926d4112 100644
--- a/buildroot-external/board/ova/barebox-env/boot/system1
+++ b/buildroot-external/board/ova/barebox-env/boot/system1
@@ -1,4 +1,4 @@
 #!/bin/sh
 
 global bootm.image="/mnt/disk2/boot/bzImage"
-global linux.bootargs.dyn.root="root=/dev/sda3 rootfstype=squashfs ro"
+global linux.bootargs.dyn.root="root=PARTUUID=a3ec664e-32ce-4665-95ea-7ae90ce9aa20 rootfstype=squashfs ro"