diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index c647d85..a112e49 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -891,7 +891,7 @@
 static void sd_rw_intr(struct scsi_cmnd * SCpnt)
 {
 	int result = SCpnt->result;
-	int this_count = SCpnt->bufflen;
+	int this_count = SCpnt->request_bufflen;
 	int good_bytes = (result == 0 ? this_count : 0);
 	sector_t block_sectors = 1;
 	u64 first_err_block;