diff --git a/lisp/language/thai-util.el b/lisp/language/thai-util.el
index c50564a808c..d7e7eb01cd0 100644
--- a/lisp/language/thai-util.el
+++ b/lisp/language/thai-util.el
@@ -24,7 +24,7 @@
 
 ;;; Code:
 
-;;;autoload
+;;;###autoload
 (defun setup-thai-environment ()
   "Setup multilingual environment (MULE) for Thai."
   (interactive)