diff --git a/scst/src/dev_handlers/scst_vdisk.c b/scst/src/dev_handlers/scst_vdisk.c
index 4d9e3a141..a248c22ae 100644
--- a/scst/src/dev_handlers/scst_vdisk.c
+++ b/scst/src/dev_handlers/scst_vdisk.c
@@ -1209,7 +1209,7 @@ static void vdisk_exec_inquiry(struct scst_cmd *cmd)
 		}
 
 		buf[2] = 4;		/* Device complies to this standard - SPC-2  */
-		buf[3] = 2;		/* data in format specified in this standard */
+		buf[3] = 0x12;		/* HiSup + data in format specified in SPC-2 */
 		buf[4] = 31;		/* n - 4 = 35 - 4 = 31 for full 36 byte data */
 		buf[6] = 0; buf[7] = 2; /* BQue = 0, CMDQUE = 1 commands queuing supported */
 
diff --git a/usr/fileio/common.c b/usr/fileio/common.c
index 2cf7be0b8..50d0e9bdf 100644
--- a/usr/fileio/common.c
+++ b/usr/fileio/common.c
@@ -944,7 +944,7 @@ static void exec_inquiry(struct vdisk_cmd *vcmd)
 		}
 
 		buf[2] = 4;		/* Device complies to this standard - SPC-2  */
-		buf[3] = 2;		/* data in format specified in this standard */
+		buf[3] = 0x12;		/* HiSup + data in format specified in SPC-2 */
 		buf[4] = 31;		/* n - 4 = 35 - 4 = 31 for full 36 byte data */
 		buf[6] = 0; buf[7] = 2; /* BQue = 0, CMDQUE = 1 commands queuing supported */