9p2000.u
diff --git a/include/9p.h b/include/9p.h
index b6e959b..9d98bba 100644
--- a/include/9p.h
+++ b/include/9p.h
@@ -204,6 +204,7 @@
 	int		nopipe;
 	int		srvfd;
 	int		leavefdsopen;	/* magic for acme win */
+	int		dotu;
 
 /* below is implementation-specific; don't use */
 	Fidpool*	fpool;