diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 0009818a430..d1bf1ca4f71 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -333,6 +333,7 @@ int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg)
 	scsi_cmd[8]  = args[3];
 	scsi_cmd[10] = args[4];
 	scsi_cmd[12] = args[5];
+	scsi_cmd[13] = args[6] & 0x0f;
 	scsi_cmd[14] = args[0];
 
 	/* Good values for timeout and retries?  Values below