diff --git a/Source/HBIOS/updater.asm b/Source/HBIOS/updater.asm
index 24cbb2ba..b23bb2cd 100644
--- a/Source/HBIOS/updater.asm
+++ b/Source/HBIOS/updater.asm
@@ -131,7 +131,7 @@
 ;
 #INCLUDE	"std.asm"
 ;
-HBX_BNKSEL	.EQU	$FE2B
+HBX_BNKSEL	.EQU	$FFF3
 ;
 #DEFINE	HB_DI	DI
 #DEFINE	HB_EI	EI