diff --git a/contao/dca/tl_form.php b/contao/dca/tl_form.php
index 21829b6..89a41e8 100644
--- a/contao/dca/tl_form.php
+++ b/contao/dca/tl_form.php
@@ -17,6 +17,7 @@
  */
 $GLOBALS['TL_DCA']['tl_form']['fields']['nc_notification'] = [
     'exclude' => true,
+    'filter' => true,
     'inputType' => 'select',
     'eval' => ['includeBlankOption' => true, 'chosen' => true, 'tl_class' => 'clr w50'],
     'sql' => ['type' => 'integer', 'default' => 0, 'unsigned' => true],