diff --git a/Source/HBIOS/ide.asm b/Source/HBIOS/ide.asm
index e16d4f2c..96d2626b 100644
--- a/Source/HBIOS/ide.asm
+++ b/Source/HBIOS/ide.asm
@@ -1607,7 +1607,7 @@ IDE_WAIT002:
 	;;;IN	A,(C)			; GET REGISTER VALUE
 	
 	PUSH	BC			; SAVE LOOP CONTROL
-	LD	B,$FF			; MSB FOR I/O
+	LD	B,IO_SEGMENT		; MSB FOR I/O
 	IN	A,(C)			; READ PORT
 	POP	BC			; RESTORE LOOP CONTROL