diff --git a/src/main/java/org/gcube/common/authorization/client/proxy/DefaultAuthorizationProxy.java b/src/main/java/org/gcube/common/authorization/client/proxy/DefaultAuthorizationProxy.java
index c869a90..6dd9817 100644
--- a/src/main/java/org/gcube/common/authorization/client/proxy/DefaultAuthorizationProxy.java
+++ b/src/main/java/org/gcube/common/authorization/client/proxy/DefaultAuthorizationProxy.java
@@ -121,7 +121,7 @@ public class DefaultAuthorizationProxy implements AuthorizationProxy {
 	}
 	
 	@Override
-	public String resolveTokenByUserAndContext(String user, String context) throws Exception {
+	public String resolveTokenByUserAndContext(String user, String context) throws ObjectNotFound, Exception {
 
 		String methodPath = "/token/";