diff --git a/blobmsg.h b/blobmsg.h
index 9e71939..b50cca9 100644
--- a/blobmsg.h
+++ b/blobmsg.h
@@ -29,7 +29,9 @@ enum blobmsg_type {
 	BLOBMSG_TYPE_INT64,
 	BLOBMSG_TYPE_INT32,
 	BLOBMSG_TYPE_INT16,
-	BLOBMSG_TYPE_INT8
+	BLOBMSG_TYPE_INT8,
+	__BLOBMSG_TYPE_LAST,
+	BLOBMSG_TYPE_LAST = __BLOBMSG_TYPE_LAST - 1
 };
 
 struct blobmsg_hdr {