diff --git a/lisp/emacs-lisp/lisp-mode.el b/lisp/emacs-lisp/lisp-mode.el
index 3918fa01b2a..c96d849d442 100644
--- a/lisp/emacs-lisp/lisp-mode.el
+++ b/lisp/emacs-lisp/lisp-mode.el
@@ -775,7 +775,6 @@ or to switch back to an existing one."
   (setq-local find-tag-default-function 'lisp-find-tag-default)
   (setq-local comment-start-skip
 	      "\\(\\(^\\|[^\\\n]\\)\\(\\\\\\\\\\)*\\)\\(;+\\|#|\\) *")
-  (setq-local comment-end "|#")
   (setq imenu-case-fold-search t))
 
 (defun lisp-find-tag-default ()