diff --git a/lisp/emacs-lisp/rx.el b/lisp/emacs-lisp/rx.el
index 76c3ac31b85..6d33299e202 100644
--- a/lisp/emacs-lisp/rx.el
+++ b/lisp/emacs-lisp/rx.el
@@ -1418,6 +1418,7 @@ into a plain rx-expression, collecting names into `rx--pcase-vars'."
      (cons head (mapcar #'rx--pcase-transform rest)))
     (_ rx)))
 
+;;;###autoload
 (pcase-defmacro rx (&rest regexps)
   "A pattern that matches strings against `rx' REGEXPS in sexp form.
 REGEXPS are interpreted as in `rx'.  The pattern matches any