diff --git a/src/emu/machine/scsibus.h b/src/emu/machine/scsibus.h
index 230e905285a..478d3907baa 100644
--- a/src/emu/machine/scsibus.h
+++ b/src/emu/machine/scsibus.h
@@ -33,10 +33,6 @@
 #define SCSI_LINE_MSG   6
 #define SCSI_LINE_RESET 7
 
-// Perhaps thse should be in scsi.h ?
-#define SCSI_PHASE_BUS_FREE 8
-#define SCSI_PHASE_SELECT   9
-
 #define REQ_DELAY_NS    90
 #define ACK_DELAY_NS    90
 #define BSY_DELAY_NS	50
diff --git a/src/emu/machine/scsihle.h b/src/emu/machine/scsihle.h
index f4f348ed1b1..aa20d91e699 100644
--- a/src/emu/machine/scsihle.h
+++ b/src/emu/machine/scsihle.h
@@ -51,6 +51,8 @@ extern int SCSILengthFromUINT16( UINT8 *length );
 #define SCSI_PHASE_STATUS ( 3 )
 #define SCSI_PHASE_MESSAGE_OUT ( 6 )
 #define SCSI_PHASE_MESSAGE_IN ( 7 )
+#define SCSI_PHASE_BUS_FREE ( 8 )
+#define SCSI_PHASE_SELECT ( 9 )
 
 #define SCSI_CMD_TEST_UNIT_READY ( 0x00 )
 #define SCSI_CMD_RECALIBRATE ( 0x01 )
diff --git a/src/mess/machine/fm_scsi.h b/src/mess/machine/fm_scsi.h
index 0d10320b8a1..b7c98a44398 100644
--- a/src/mess/machine/fm_scsi.h
+++ b/src/mess/machine/fm_scsi.h
@@ -30,10 +30,6 @@
 #define FMSCSI_LINE_DMAE  0x02
 #define FMSCSI_LINE_RST   0x01
 
-// these aren't defined in scsi.h
-#define SCSI_PHASE_BUS_FREE 8
-#define SCSI_PHASE_SELECT   9
-
 struct FMSCSIinterface
 {
 	devcb_write_line irq_callback;	/* irq callback */
diff --git a/src/mess/machine/mb89352.h b/src/mess/machine/mb89352.h
index 0f25aad23dc..742564be953 100644
--- a/src/mess/machine/mb89352.h
+++ b/src/mess/machine/mb89352.h
@@ -48,10 +48,6 @@
 #define SERR_SCSI_PAR   0x80
 
 
-// these aren't defined in scsi.h
-#define SCSI_PHASE_BUS_FREE 8
-#define SCSI_PHASE_SELECT   9
-
 struct mb89352_interface
 {
 	devcb_write_line irq_callback;	/* irq callback */