diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index da63722..c0e4c67 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -178,8 +178,8 @@
 
 extern struct scsi_device *__scsi_add_device(struct Scsi_Host *,
 		uint, uint, uint, void *hostdata);
-#define scsi_add_device(host, channel, target, lun) \
-	__scsi_add_device(host, channel, target, lun, NULL)
+extern int scsi_add_device(struct Scsi_Host *host, uint channel,
+			   uint target, uint lun);
 extern void scsi_remove_device(struct scsi_device *);
 extern int scsi_device_cancel(struct scsi_device *, int);