diff --git a/sys/src/9/boot/bootrc b/sys/src/9/boot/bootrc
index 4590c4a38..f518774f0 100644
--- a/sys/src/9/boot/bootrc
+++ b/sys/src/9/boot/bootrc
@@ -22,6 +22,7 @@ set nvram
 set rootdir
 set bootargs
 set nobootprompt
+set sysname
 set debugfactotum
 set fs
 set fsaddr