JSF Listener Class can not be found during deployment

I defined a listener for COERCE_TO_ZERO konfiguration.

web.xml

    <listener>
    <listener-class>com.mycompany.web.listener.MyServletListener</listener-class>
</listener>

Listener Class:

public class MyServletListener implements ServletContextListener {

    /**
     * {@inheritDoc}
     * 
     * @see javax.servlet.ServletContextListener#contextDestroyed(javax.servlet.ServletContextEvent)
     */
    @Override
    public void contextDestroyed(final ServletContextEvent arg0) {
        // Nothing.
    }

    /**
     * {@inheritDoc}
     * 
     * @see 
javax.servlet.ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)
     */
    @Override
    public void contextInitialized(final ServletContextEvent arg0) {
        System.setProperty("org.apache.el.parser.COERCE_TO_ZERO", "false");
    }

}

During deploymentI get the following exception:

[2/13/15 11:15:11:955 CET] 00000016 annotation    W com.ibm.ws.webcontainer.annotation.WASAnnotationHelper collectClasses SRVE8000W: Skipped class that failed to initialize for annotation scanning.
                             java.lang.ClassNotFoundException: com.mycompany.web.listener.MyServletListener
    at java.lang.Class.forNameImpl(Native Method)
    at java.lang.Class.forName(Class.java:214)
    at com.ibm.ws.webcontainer.annotation.WASAnnotationHelper.loadClass(WASAnnotationHelper.java:822)
    at com.ibm.ws.webcontainer.annotation.WASAnnotationHelper.collectClasses(WASAnnotationHelper.java:195)
    at com.ibm.ws.webcontainer.annotation.WASAnnotationHelper.<init>(WASAnnotationHelper.java:150)
    at com.ibm.ws.webcontainer.annotation.WASAnnotationHelperManager.getAnnotationHelper(WASAnnotationHelperManager.java:63)
    at com.ibm.ws.webcontainer.metadata.WebMetaDataFactory.handOffReferenceData(WebMetaDataFactory.java:450)
    at com.ibm.ws.webcontainer.metadata.WebMetaDataFactory.createMetaData(WebMetaDataFactory.java:423)
    at com.ibm.ws.runtime.component.MetaDataMgrImpl.createMetaDataFromFactories(MetaDataMgrImpl.java:228)
    at com.ibm.ws.runtime.component.MetaDataMgrImpl.createMetaData(MetaDataMgrImpl.java:411)
    at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:631)
    at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:967)
    at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:771)
    at com.ibm.ws.runtime.component.ApplicationMgrImpl$5.run(ApplicationMgrImpl.java:2169)
    at com.ibm.ws.security.auth.ContextManagerImpl.runAs(ContextManagerImpl.java:5468)
    at com.ibm.ws.security.auth.ContextManagerImpl.runAsSystem(ContextManagerImpl.java:5594)
    at com.ibm.ws.security.core.SecurityContext.runAsSystem(SecurityContext.java:255)
    at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:2174)
    at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:389)
    at com.ibm.ws.runtime.component.CompositionUnitImpl.start(CompositionUnitImpl.java:123)
    at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:332)
    at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.access$500(CompositionUnitMgrImpl.java:119)
    at com.ibm.ws.runtime.component.CompositionUnitMgrImpl$CUInitializer.run(CompositionUnitMgrImpl.java:938)
    at com.ibm.wsspi.runtime.component.WsComponentImpl$_AsynchInitializer.run(WsComponentImpl.java:496)
    at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1702)

What can be the problem?