diff --git a/adoc-mode.el b/adoc-mode.el
index f7ddb27..1d7d4fd 100644
--- a/adoc-mode.el
+++ b/adoc-mode.el
@@ -1992,8 +1992,7 @@ LANG is a string, and the returned major mode is a symbol."
          (intern (concat (downcase lang) "-mode")))))
 
 (defun adoc-map-intervals (fun property &optional beg end object)
-  "Apply FUN to all intervals of PROPERTY in OBJECT in the region from BEG to END.
-FUN is called with two arguments: the beginning and the end of the interval."
+  "Apply FUN to all intervals of PROPERTY in OBJECT in the region from BEG to END."
   (unless object (setq object (current-buffer)))
   (unless beg (setq beg (point-min)))
   (unless end (setq end (point-max)))