diff --git a/Source/HBIOS/md.asm b/Source/HBIOS/md.asm
index 10e08d07..f96a782c 100644
--- a/Source/HBIOS/md.asm
+++ b/Source/HBIOS/md.asm
@@ -376,7 +376,7 @@ MD_SECM:
 	ADD	HL,DE			; WANT TO COPY
 	LD	DE,(MD_DSKBUF)
 ;
-#IF (DMAENABLE & (DMAMODE!DMAMODE_NONE))
+#IF (DMAENABLE & (DMAMODE!=DMAMODE_NONE))
 #IF (DMA_FBACK)
 	LD	A,(DMA_FAIL_FLAG)
 	OR	A
@@ -386,7 +386,7 @@ MD_SECM:
 	JP	DMALDIR			; 4K SECTOR TO THE DISK BUFFER
 #ENDIF
 MD_NODMA:
-#IF (!(DMAENABLE & (DMAMODE!DMAMODE_NONE)))	
+#IF (!(DMAENABLE & (DMAMODE!=DMAMODE_NONE)))	
 	LD	BC,512			; COPY ONE 512B SECTOR FROM THE
 	LDIR				; 4K SECTOR TO THE DISK BUFFER
 	XOR	A
@@ -510,7 +510,7 @@ MD_SECM1:				; DESIRED SECTOR IS IN BUFFER
 	EX	DE,HL
 ;
 	LD	HL,(MD_DSKBUF)
-#IF (DMAENABLE & (DMAMODE!DMAMODE_NONE))
+#IF (DMAENABLE & (DMAMODE!=DMAMODE_NONE))
 #IF (DMA_FBACK)
 	LD	A,(DMA_FAIL_FLAG)
 	OR	A
@@ -522,7 +522,7 @@ MD_SECM1:				; DESIRED SECTOR IS IN BUFFER
 	JR	MD_NODMAERR
 #ENDIF
 MD_NODMA1:
-#IF (!(DMAENABLE & (DMAMODE!DMAMODE_NONE)))
+#IF (!(DMAENABLE & (DMAMODE!=DMAMODE_NONE)))
 	LD	BC,512			; COPY ONE 512B SECTOR FROM THE
 	LDIR
 #ELSE