Wrong web.xml namespace version

Last time I troubled again with wrong namespace version in eclipse. I got error like this on eclipse:

"CHKJ3020E: Invalid Security role-name: xxxx"

The solution is just replace your web.xml namespace to version 2.5:

<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">