diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index 2528a0c..aded9a0 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -271,7 +271,7 @@ static int sg_io(struct file *file, requ
 
 	rq->cmd_type = REQ_TYPE_BLOCK_PC;
 
-	rq->timeout = jiffies_to_msecs(hdr->timeout);
+	rq->timeout = (hdr->timeout * HZ) / 1000;
 	if (!rq->timeout)
 		rq->timeout = q->sg_timeout;
 	if (!rq->timeout)