diff --git a/mxgrub/mxgrub b/mxgrub/mxgrub
index 48d579e..ff54c00 100755
--- a/mxgrub/mxgrub
+++ b/mxgrub/mxgrub
@@ -257,6 +257,7 @@ sub update_grub_cfg {
 set timeout=5
 
 set superusers="root"
+export superusers
 password_pbkdf2 root grub.pbkdf2.sha512.10000.A1168F03CC3CD47F79848E949584EA624FF531B53611F61218DC5BAD760E767063A96E6A5CE6B3506BAC28C5A2F9A7D491BDA770CC233BC9F464F33F8524FC79.EE4EF2EB7B2B8C2DD313300396179F5484CAA011D7CBF2A3FF886A372A6FF2DBC3B1AE59E05687B294D4B8F4674DA55CCE18EDBEB2635E4B6F2BE7C4EBC8916A
 
 set default="$MARIUX_DEFAULT"