diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java
index 71e11f2..40bc089 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java
@@ -78,15 +78,15 @@ public class SessionUtil {
 		ASLSession session;
 		if (username == null) {
 			logger.warn("no user found in session, using test one");
-			//throw new TDGWTSessionExpiredException("Session Expired!");
-			
+			throw new TDGWTSessionExpiredException("Session Expired!");
+			/*
 			username = Constants.DEFAULT_USER;
 			String scope = Constants.DEFAULT_SCOPE;
 
 			httpSession.setAttribute(ScopeHelper.USERNAME_ATTRIBUTE, username);
 			session = SessionManager.getInstance().getASLSession(
 					httpSession.getId(), username);
-			session.setScope(scope);
+			session.setScope(scope);*/
 			
 		} else {
 			session = SessionManager.getInstance().getASLSession(