diff --git a/src/main/java/org/gcube/portlets/user/workspace/server/util/WsUtil.java b/src/main/java/org/gcube/portlets/user/workspace/server/util/WsUtil.java
index f5f7ce9..069b4c7 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/server/util/WsUtil.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/server/util/WsUtil.java
@@ -46,7 +46,7 @@ public class WsUtil {
 	public static final String WORKSPACE_SCOPE_UTIL = "WORKSPACE_SCOPE_UTIL";
 	public static final String URL_SHORTENER_SERVICE = "URL_SHORTENER_SERVICE";
 	public static final String URI_RESOLVER_SERVICE = "URI_RESOLVER_SERVICE";
-	public static final String NOTIFICATION_PORTLET_CLASS_ID = GWTWorkspaceServiceImpl.class.toString(); //IN DEV
+	public static final String NOTIFICATION_PORTLET_CLASS_ID = "org.gcube.portlets.user.workspace.server.GWTWorkspaceServiceImpl"; //IN DEV
 	
 //	public static final String TEST_SCOPE = "/gcube/devsec";
 //	public static final String TEST_USER = "pasquale.pagano";
@@ -245,6 +245,7 @@ public class WsUtil {
 		if (notifMng == null) {
 			try{
 				logger.trace("Create new NotificationsManager for user: "+session.getUsername());
+				logger.trace("New ApplicationNotificationsManager with portlet class name: "+NOTIFICATION_PORTLET_CLASS_ID);
 				notifMng = new ApplicationNotificationsManager(session, NOTIFICATION_PORTLET_CLASS_ID);
 				session.setAttribute(NOTIFICATION_MANAGER, notifMng);
 			}catch (Exception e) {