diff --git a/trunk/includes/class/class.LSattribute.php b/trunk/includes/class/class.LSattribute.php
index 6e1bd5fe..6254ba98 100644
--- a/trunk/includes/class/class.LSattribute.php
+++ b/trunk/includes/class/class.LSattribute.php
@@ -338,6 +338,9 @@ class LSattribute {
    */
   function getFormVal() {
     $data=$this -> getDisplayValue();
+    if ($data==NULL) {
+      $data=array();
+    }
     if(!is_array($data)) {
       $data=array($data);
     }