diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c
index 00c7b958361ada06432ffe96173b23222d591b5e..ab82d6addd7fb78bca4cf0d83da3e14a09aa88d6 100644
--- a/drivers/ieee1394/sbp2.c
+++ b/drivers/ieee1394/sbp2.c
@@ -745,7 +745,8 @@ static struct scsi_id_instance_data *sbp2_alloc_device(struct unit_directory *ud
 	list_add_tail(&scsi_id->scsi_list, &hi->scsi_ids);
 
 	/* Register our host with the SCSI stack. */
-	scsi_host = scsi_host_alloc(&scsi_driver_template, 0);
+	scsi_host = scsi_host_alloc(&scsi_driver_template,
+				    sizeof (unsigned long));
 	if (!scsi_host) {
 		SBP2_ERR("failed to register scsi host");
 		goto failed_alloc;