Fix invalid child element in WCF RIA with SOAP endpoint

Is there anyway to fix the warning that Visual Studio flags when you try and add the SOAP endpoint to a WCF RIA service ?

The element 'system.serviceModel' has invalid child element 'domainServices'

I found one b开发者_运维知识库log post, Silverlight forums, but the only "answer" in it just says edit the Visual Studio DotNetConfig.xsd, not actually what to do