diff --git ucreate.module ucreate.module
index a02dc56..1fcf479 100644
--- ucreate.module
+++ ucreate.module
@@ -331,5 +331,5 @@ function ucreate_user_create($edit) {
 
 function ucreate_mail($key, &$message, $params) {
   $message['subject'] = $params['subject'];
-  $message['body'] = $params['body'];
+  $message['body'][] = $params['body'];
 }
\ No newline at end of file
diff --git ucreate_og.module ucreate_og.module
index 0677458..fdaf2a3 100644
--- ucreate_og.module
+++ ucreate_og.module
@@ -23,7 +23,7 @@ function ucreate_og_form_alter(&$form, $form_state, $form_id) {
 function ucreate_og_mail_alter(&$message) {
   if ($message['id'] == 'ucreate_ucreate-create' && $account = _ucreate_og_get_last_edit()) {
     if (is_array($account['ucreate_og_group_titles'])) {
-      $message['body'] .= "\n\n". t('We also added you as member to the group(s): !groups', array('!groups' => implode(', ', $account['ucreate_og_group_titles'])));
+      $message['body'][] = "\n\n". t('We also added you as member to the group(s): !groups', array('!groups' => implode(', ', $account['ucreate_og_group_titles'])));
     }
   }
 }