diff --git a/newsletter.module b/newsletter.module
index 0b1447f..86e8502 100644
--- a/newsletter.module
+++ b/newsletter.module
@@ -762,7 +762,7 @@ function newsletter_mail($key, &$message, $params) {
       break;
     case 'custom':
       $body = token_replace($template_body['value'], array('newsletter_subscriber' => $subscriber));
-      $message['subject'] = token_replace($template->subject, array());
+      $message['subject'] = token_replace($template->subject, array('newsletter_subscriber' => $subscriber));
       $message['body'][] = $body;
       $message['format'] = (isset($subscriber->receive_format) && $subscriber->receive_format)
         ? $subscriber->receive_format