commit e40aaa4782de24054ded9d9657d4e3faac1b5705
Author: Szelenyi Tamas <tamas@szelenyi.hu>
Date:   Mon Sep 10 09:33:04 2012 +0200

    fix filter handler

diff --git a/simplenews.views.inc b/simplenews.views.inc
index 7bbedfe..ead0a7b 100644
--- a/simplenews.views.inc
+++ b/simplenews.views.inc
@@ -350,8 +350,10 @@ function simplenews_views_data() {
       'click sortable' => TRUE,
     ),
     'filter' => array(
-      'handler' => 'views_handler_filter_boolean',
-      'allow empty' => TRUE,
+      'handler' => 'views_handler_filter_boolean_operator',
+      'label' => t('Activated'),
+      'type' => 'yes-no',
+      'accept null' => TRUE,
     ),
     'argument' => array(
       'handler' => 'views_handler_argument_numeric',