diff --git a/trunk/includes/functions.php b/trunk/includes/functions.php
index 43700c0f..e0937233 100644
--- a/trunk/includes/functions.php
+++ b/trunk/includes/functions.php
@@ -431,6 +431,8 @@ function LSdebugDefined() {
   
   function tr($msg,$key=null) {
     $val = $GLOBALS['Smarty']->get_template_vars($msg);
+    if (!$val)
+      $val=$msg;
     if (is_array($val)) {
       echo __($val[$key]);
     }