diff --git a/sys/dev/scsipi/st.c b/sys/dev/scsipi/st.c
index 2a1ae10cbc79..b9446e56cc6d 100644
--- a/sys/dev/scsipi/st.c
+++ b/sys/dev/scsipi/st.c
@@ -13,7 +13,7 @@
  * on the understanding that TFS is not responsible for the correct
  * functioning of this software in any circumstances.
  *
- *	$Id: st.c,v 1.10 1993/06/16 04:31:43 deraadt Exp $
+ *	$Id: st.c,v 1.11 1993/06/16 10:39:35 andrew Exp $
  */
 
 /*
@@ -49,7 +49,7 @@ long int ststrats, stqueues;
 #define	UNITSHIFT	4
 #define MODE(z)		((minor(z) & 0x03))
 #define DSTY(z)		(((minor(z) >> 2) & 0x03))
-#define UNIT(z)		((minor(z) >> UNIT_SHIFT))
+#define UNIT(z)		((minor(z) >> UNITSHIFT))
 
 #undef	NST
 #define	NST		( makedev(1,0) >> UNITSHIFT)
diff --git a/sys/scsi/st.c b/sys/scsi/st.c
index 2a1ae10cbc79..b9446e56cc6d 100644
--- a/sys/scsi/st.c
+++ b/sys/scsi/st.c
@@ -13,7 +13,7 @@
  * on the understanding that TFS is not responsible for the correct
  * functioning of this software in any circumstances.
  *
- *	$Id: st.c,v 1.10 1993/06/16 04:31:43 deraadt Exp $
+ *	$Id: st.c,v 1.11 1993/06/16 10:39:35 andrew Exp $
  */
 
 /*
@@ -49,7 +49,7 @@ long int ststrats, stqueues;
 #define	UNITSHIFT	4
 #define MODE(z)		((minor(z) & 0x03))
 #define DSTY(z)		(((minor(z) >> 2) & 0x03))
-#define UNIT(z)		((minor(z) >> UNIT_SHIFT))
+#define UNIT(z)		((minor(z) >> UNITSHIFT))
 
 #undef	NST
 #define	NST		( makedev(1,0) >> UNITSHIFT)