diff --git a/lisp/help.el b/lisp/help.el
index 4c5382ff285..6f55136049b 100644
--- a/lisp/help.el
+++ b/lisp/help.el
@@ -737,7 +737,7 @@ doesn't have any effect."
                  (set :tag "Show section unless"
                       (cons :tag "Heading matches regexp"
                             (const match-regexp)  string)
-                      (cons :tag "Custom function returns non-nil"
+                      (cons :tag "Custom function to show/hide sections"
                             (const custom-function) function)))
   :group 'help
   :version "30.1")