Can'e deploy bare jars with old DD

Trying to deploy a war with a Servlet 2.3 DD gives

org.apache.xmlbeans.XmlException: error: The document is not a web-app@http://ja
va.sun.com/xml/ns/j2ee: document element namespace mismatch expected "http://jav
a.sun.com/xml/ns/j2ee" got ""
at org.apache.xmlbeans.impl.store.Root.verifyDocumentType(Root.java:542)

at org.apache.xmlbeans.impl.store.Root.autoTypedDocument(Root.java:458)
at org.apache.xmlbeans.impl.store.Root.loadXml(Root.java:1079)
at org.apache.xmlbeans.impl.store.Root.loadXml(Root.java:1063)
at org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.parse(SchemaType
LoaderBase.java:360)
at org.apache.geronimo.common.xml.XmlBeansUtil.parse(XmlBeansUtil.java:6
2)
at org.apache.geronimo.common.xml.XmlBeansUtil.getXmlObject(XmlBeansUtil
.java:47)
at org.apache.geronimo.jetty.deployment.JettyModuleBuilder.createDefault
Plan(JettyModuleBuilder.java:121)