Interface not found when deploying an EJB of class A that extends B and B implements an Interface

1. create an interface (POJO): MyInterface.java // ... // POJO public interface MyInterface { // ... 2. create implementation for interface (POJO too) Client.java // ... // no EJB annotations in this class, in our case thats POJO public class Client implements MyInterface { // ... 3. subclass POJO implementation: EJBClient.java // ... @javax.ejb.Stateless @javax.ejb.Local public class EJBClient extends SEITestServiceClient // EJB does deploy on JBoss 7.1.1.Final if you uncomment the following line // implements MyInterface { // ... 4. deploy and see error 5. uncomment given line in subclass 6. deploy and it works