diff --git a/src/main/java/org/gcube/common/storagehub/client/proxies/DefaultUserManager.java b/src/main/java/org/gcube/common/storagehub/client/proxies/DefaultUserManager.java
index f5f496a..13bcdbf 100644
--- a/src/main/java/org/gcube/common/storagehub/client/proxies/DefaultUserManager.java
+++ b/src/main/java/org/gcube/common/storagehub/client/proxies/DefaultUserManager.java
@@ -43,7 +43,7 @@ public class DefaultUserManager extends DefaultManagerClient implements UserMana
 					else if (response.getHTTPCode()==403)
 						throw new UserNotAuthorizedException("the call to this method is not allowed for the user");
 					else
-						throw new BackendGenericError();
+						throw new BackendGenericError("error is "+response.getHTTPCode());
 				}