diff --git a/README.org b/README.org
index 7f8e8b3..d7354b4 100644
--- a/README.org
+++ b/README.org
@@ -397,8 +397,7 @@ the contents of packages and allows to update packages to the latest version.
 #+caption: Customize Emacs Tree-sitter.
 #+name: lst:customize-emacs-tree-sitter
 #+begin_src emacs-lisp
-(when (fboundp 'treesit-install-language-grammar)
-  (require 'treesit nil 'noerror)
+(when (require 'treesit nil 'noerror)
   ;; https://lists.gnu.org/archive/html/emacs-devel/2022-11/msg01372.html
   (let ((tselp (expand-file-name "~/VCS/tree-sitter-module/dist/")))
     (when (file-exists-p tselp)