diff --git a/mollom.module b/mollom.module
index 98f09c5..232f2e3 100644
--- a/mollom.module
+++ b/mollom.module
@@ -554,13 +554,13 @@ function mollom_data_delete_form_alter(&$form, &$form_state) {
     '#type' => 'radios',
     '#title' => t('Report as inappropriate'),
     '#options' => array(
-      0 => t('Do not report'),
+      '0' => t('Do not report'),
       'spam' => t('Spam, unsolicited advertising'),
       'profanity' => t('Obscene, violent, profane'),
       'low-quality' => t('Low-quality'),
       'unwanted' => t('Unwanted, taunting, off-topic'),
     ),
-    '#default_value' => 0,
+    '#default_value' => '0',
     '#description' => t('Sending feedback to <a href="@mollom-url">Mollom</a> improves the automated moderation of new submissions.', array('@mollom-url' => 'http://mollom.com')),
   );
 }