diff --git a/private/lib/gui/DatatablesHelper.php b/private/lib/gui/DatatablesHelper.php
index 724523b..8df0418 100644
--- a/private/lib/gui/DatatablesHelper.php
+++ b/private/lib/gui/DatatablesHelper.php
@@ -52,7 +52,7 @@ class DatatablesHelper {
 					$rval->$key = self::getObjectFromFieldsArray($obj->$key, $val);
 				}
 				else {
-					if ($rval->$key instanceof MongoDate){
+					if ($val instanceof MongoDate){
 						$obj->$key = date("d-m-Y",$rval->$key->sec);
 					}
 					else {