diff --git a/lispref/hooks.texi b/lispref/hooks.texi
index e68c1fd53db..9d4156d70d8 100644
--- a/lispref/hooks.texi
+++ b/lispref/hooks.texi
@@ -55,6 +55,7 @@ however, we have renamed all of those.)
 @item command-history-hook
 @item command-line-functions
 @item comment-indent-function
+@item custom-define-hook
 @item deactivate-mark-hook
 @item diary-display-hook
 @item diary-hook