Could not inject persistence unit into CDI managed bean

I have a project running Spring 4 & JSF 2.1 using Primefaces 5 and Hibernate JPA 2.0. I use Wildfly 8.1 and configured a datasource pointing to an Oracle 10 database. The Wildfly datasource works fine (i've tested using plain JDBC) but when i try to create a LocalContainerEntityManagerFactoryBean through Spring i set the property persistenceUnitName to specify the name of my PU and then injecting in my DAOs using @PersistenceContext(unitName="myPersUnit").

Using JBoss AS 7.1.1 Final works fine and even i don't need to specify persistenceUnitName and it creates as "default" and injects it to my DAOs without specifying name, but with JBoss 8.1 Final it doesn't work. With the same configuration, it shows me the next error:

Error injecting persistence unit into CDI managed bean. Can't find a persistence unit named persUnit in deployment

But, when i remove the @PersistenceContext annotation from my property in my DAO, strangely it initializes the persistenceUnit as i can see in server log:

08:19:57,144 INFO [org.hibernate.ejb.Ejb3Configuration] (MSC service thread 1-13) HHH000204: Processing PersistenceUnitInfo [
name: persUnit
...]

But when i try to inject it, it doesn't