diff --git a/lisp/cus-edit.el b/lisp/cus-edit.el
index a12897e..55b2852 100644
--- a/lisp/cus-edit.el
+++ b/lisp/cus-edit.el
@@ -2221,7 +2221,7 @@ custom-notify
     (unless (eq state 'modified)
       (unless (memq state '(nil unknown hidden))
 	(widget-put widget :custom-state 'modified))
-      (custom-magic-reset widget)
+      (run-with-idle-timer 0.0 nil #'custom-magic-reset widget)
       (apply 'widget-default-notify widget args))))
 
 (defun custom-redraw (widget)