diff --git a/runtime/makemenu.vim b/runtime/makemenu.vim
index 27fa46f..6173d8b 100644
--- a/runtime/makemenu.vim
+++ b/runtime/makemenu.vim
@@ -481,6 +481,7 @@
 SynMenu R.Readline\ config:readline
 SynMenu R.Rebol:rebol
 SynMenu R.ReDIF:redif
+SynMenu R.Rego:rego
 SynMenu R.Relax\ NG:rng
 SynMenu R.Remind:remind
 SynMenu R.Relax\ NG\ compact:rnc