diff --git a/datamodels/2.x/itop-portal-base/portal/src/controllers/objectcontroller.class.inc.php b/datamodels/2.x/itop-portal-base/portal/src/controllers/objectcontroller.class.inc.php
index fa003a3dc..b86a75824 100644
--- a/datamodels/2.x/itop-portal-base/portal/src/controllers/objectcontroller.class.inc.php
+++ b/datamodels/2.x/itop-portal-base/portal/src/controllers/objectcontroller.class.inc.php
@@ -804,7 +804,7 @@ class ObjectController extends AbstractController
 		$aAttCodes = MetaModel::FlattenZList(MetaModel::GetZListItems($sTargetObjectClass, 'list'));
 		// - Adding friendlyname attribute to the list is not already in it
 		$sTitleAttCode = MetaModel::GetFriendlyNameAttributeCode($sTargetObjectClass);
-		if (!in_array($sTitleAttCode, $aAttCodes))
+		if (($sTitleAttCode !== null) && !in_array($sTitleAttCode, $aAttCodes))
 		{
 			$aAttCodes = array_merge(array($sTitleAttCode), $aAttCodes);
 		}
@@ -1042,7 +1042,7 @@ class ObjectController extends AbstractController
 //		$aAttCodes = MetaModel::FlattenZList(MetaModel::GetZListItems($sTargetObjectClass, 'list'));
 //		// - Adding friendlyname attribute to the list is not already in it
 //		$sTitleAttrCode = MetaModel::GetFriendlyNameAttributeCode($sTargetObjectClass);
-//		if (!in_array($sTitleAttrCode, $aAttCodes))
+//		if (($sTitleAttrCode !== null) && !in_array($sTitleAttrCode, $aAttCodes))
 //		{
 //			$aAttCodes = array_merge(array($sTitleAttrCode), $aAttCodes);
 //		}