diff --git a/lisp/emulation/viper-keym.el b/lisp/emulation/viper-keym.el
index 96c5c2bb650..95f3dbb1a40 100644
--- a/lisp/emulation/viper-keym.el
+++ b/lisp/emulation/viper-keym.el
@@ -148,7 +148,7 @@ viper-insert-basic-map.  Not recommended, except for novice users.")
 
 ;; This was the main Vi mode in old versions of VIP which may have been
 ;; extensively used by VIP users.  We declare it as a global var and, after
-;; viper-custom-file-name is loaded, we add this keymapto viper-vi-basic-map.
+;; viper-custom-file-name is loaded, we add this keymap to viper-vi-basic-map.
 (defvar viper-mode-map (make-sparse-keymap))
 
 ;; Some important keys used in viper