diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index 3940726..2a9268a 100644
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -624,7 +624,9 @@ static int32_t scsi_send_command(SCSIDevice *d,
uint32_t tag,
         {
             uint8_t *p;
             int page;
-
+            int dbd;
+
+            dbd = buf[1]  & 0x8;
             page = buf[2] & 0x3f;
             DPRINTF("Mode Sense (page %d, len %d)\n", page, len);