diff --git a/lisp/emacs-lisp/lisp-mode.el b/lisp/emacs-lisp/lisp-mode.el
index 1990630608d..4eee009f689 100644
--- a/lisp/emacs-lisp/lisp-mode.el
+++ b/lisp/emacs-lisp/lisp-mode.el
@@ -134,7 +134,7 @@
 	 (purecopy (concat "^\\s-*("
 			   (regexp-opt
 			    '(;; Elisp
-                              "defconst" "defcustom"
+                              "defconst" "defcustom" "defvar-keymap"
                               ;; CL
                               "defconstant"
 			      "defparameter" "define-symbol-macro")