I am Using JBoss  EAP 5.0.1 and my Application has log4j.jar in WEB-INF/lib

I get error below because of conflict with jboss log4j in common/lib.

ERROR [STDERR] log4j:ERROR A "org.jboss.logging.appender.FileAppender" object is not assignable to a "org.apache.log4j.Appender" variable.

ERROR [STDERR] log4j:ERROR The class "org.apache.log4j.Appender" was loaded by

How to fix this error ?

I want to make application log without changing jboss-log4j.xml