diff --git a/Source/HBIOS/sd.asm b/Source/HBIOS/sd.asm
index b2ed4dc8..12f8cd60 100644
--- a/Source/HBIOS/sd.asm
+++ b/Source/HBIOS/sd.asm
@@ -2025,18 +2025,18 @@ SD_DSKBUF	.DW	0		; ADR OF ACTIVE DISK BUFFER
 ;
 MIRROR:
 #IF (((SDMODE == SDMODE_CSIO) | (SDMODE == SDMODE_MK4) | (SDMODE == SDMODE_SC)) & SDCSIOFAST)
-						; FASTEST BUT USES MOST CODE SPACE
+					; FASTEST BUT USES MOST CODE SPACE
 	LD	BC,MIRTAB		; 256 BYTE MIRROR TABLE
-	ADD	A,C				; ADD OFFSET
+	ADD	A,C			; ADD OFFSET
 	LD	C,A
 	JR	NC,MIRROR2
 	INC	B
 MIRROR2:
 	LD	A,(BC)			; GET RESULT
-	LD	C,A				; RETURN RESULT IN C
+	LD	C,A			; RETURN RESULT IN C
 	RET
 #ELSE
-						; SLOWER BUT LESS CODE SPACE
+					; SLOWER BUT LESS CODE SPACE
 	LD  C,A				; A = 76543210
 	RLCA
 	RLCA				; A = 54321076