diff --git a/Source/HBIOS/updater.asm b/Source/HBIOS/updater.asm
index 0c18ef73..1dea76ea 100644
--- a/Source/HBIOS/updater.asm
+++ b/Source/HBIOS/updater.asm
@@ -127,7 +127,7 @@ HBX_BNKSEL	.EQU	$FE2B
 #DEFINE	HB_DI	DI
 #DEFINE	HB_EI	EI
 ;
-XFUDBG		.EQU	1
+XFUDBG		.EQU	0
 ;
 		.ORG    USR_LOC
 ;