;;; mh-folder.el --- MH-Folder mode
-;; Copyright (C) 2002-2003, 2005-2011 Free Software Foundation, Inc.
+;; Copyright (C) 2002-2003, 2005-2012 Free Software Foundation, Inc.
;; Author: Bill Wohler <wohler@newt.com>
;; Maintainer: Bill Wohler <wohler@newt.com>
;; Register mh-folder-mode as supporting which-function-mode...
(mh-require 'which-func nil t)
-(when (boundp 'which-func-modes)
+(when (and (boundp 'which-func-modes) (listp which-func-modes))
(add-to-list 'which-func-modes 'mh-folder-mode))
;; Shush compiler.