diff --git a/elisp/ghc-check.el b/elisp/ghc-check.el
index ec4c2b9..94e8320 100644
--- a/elisp/ghc-check.el
+++ b/elisp/ghc-check.el
@@ -8,7 +8,9 @@
 
 ;;; Code:
 
-;; multiple Main in the same directory
+;; todo:
+;; * hlint
+;; * multiple Mains in the same directory
 
 (require 'ghc-func)