diff --git a/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/GcubeCkanDataCatalogServiceImpl.java b/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/GcubeCkanDataCatalogServiceImpl.java
index 9f7040a..6448f7a 100644
--- a/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/GcubeCkanDataCatalogServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/server/GcubeCkanDataCatalogServiceImpl.java
@@ -158,8 +158,7 @@ public class GcubeCkanDataCatalogServiceImpl extends RemoteServiceServlet implem
 			for (String vre : listVres) {
 				vres+=vre+",";
 			}
-			vres = vres.substring(0, vres.length()-1); //remove last ","
-			vres.toLowerCase(); //A CKAN Organization ID must be lower case
+			vres = vres.substring(0, vres.length()-1).toLowerCase(); //remove last "," and to lower case. A CKAN Organization ID must be lower case
 		}
 
 		logger.debug("List of VREs contains: " +vres);