diff --git a/lisp/outline.el b/lisp/outline.el
index 8132043097e..bb62c573c40 100644
--- a/lisp/outline.el
+++ b/lisp/outline.el
@@ -281,7 +281,7 @@ This option is only in effect when `outline-minor-mode-cycle' is non-nil."
   [outline-1 outline-2 outline-3 outline-4
    outline-5 outline-6 outline-7 outline-8])
 
-(defcustom outline-minor-mode-use-buttons '(derived-mode . special-mode)
+(defcustom outline-minor-mode-use-buttons '(derived-mode . help-mode)
   "Whether to display clickable buttons on the headings.
 The value should be a `buffer-match-p' condition.