Index: comment_notify.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/comment_notify/comment_notify.module,v
retrieving revision 1.89
diff -u -p -r1.89 comment_notify.module
--- comment_notify.module	1 Nov 2010 19:39:40 -0000	1.89
+++ comment_notify.module	10 Dec 2010 16:38:36 -0000
@@ -118,6 +118,11 @@ function comment_notify_form_comment_for
       '#type' => 'checkbox',
       '#title' => t('Notify me when new comments are posted'),
       '#default_value' => (bool) $preference,
+      '#states' => array(
+        'checked' => array(
+          ':input[name="notify_type"]' => array('checked' => TRUE),
+        ),
+      ),
   );
 
   if (count($available_options) > 1) {