Vaadin 7 portlets EJB injection


I am having problems making CDI work on Vaadin 7 portlets.

My environment is:
Vaadin 7
Liferay 6.1.1
GlassFish 3.1.2

I annotated the UI class with @CDIUI, and tried to inject a stateless EJB with @EJB annotation.

When I create a Vaadin 7 project with Eclipse Vaadin plugin, injections are resolved properly, but if I create a portlet, beans are not injected.

Am I missing something on Vaadin configuration side?

Thank you in advance.