For some reason, transitive deps show up in the classpath before direct dependencies, so you get issues like this. It's something I will eventually try to fix in maven, because I think direct deps should come first. For now, you can exclude the transitive dep on jbossxb by adding this to the container dependency. | <dependency> | <groupId>org.jboss.microcontainer</groupId> | <artifactId>jboss-container</artifactId> | <version>2.0.0-SNAPSHOT</version> | <scope>compile</scope> | <exclusions> | <exclusion> | <groupId>jboss</groupId> | <artifactId>jbossxb</artifactId> | </exclusion> | </exclusions> | </dependency> | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4077827#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...