(auto-save-list-file-prefix): Fix custom type.

diff --git a/lisp/startup.el b/lisp/startup.el
index 7f3639551dec5e1b003e984742e204b9088fd212..ac7fc93bb8eaa5025bfdf82b882768cb709ae8d2 100644 (file)
--- a/lisp/startup.el
+++ b/lisp/startup.el
@@ -325,7 +325,8 @@ This is used after reading your `.emacs' file to initialize
 if you have not already set `auto-save-list-file-name' yourself.
 Set this to nil if you want to prevent `auto-save-list-file-name'
 from being initialized."
-  :type 'string
+  :type '(choice (const :tag "Don't record a session's auto save list" nil)
+                string)
   :group 'auto-save)
 
 (defvar init-file-debug nil)