WCF Wsdl - Get rid of the "tns" xml namespace prefix with my own prefix?

Is there any way to replace all tns prefixes by my own when my WSDL is generated?

I know that setting the namespace and name of my ServiceContract, OperationContract, DataContract, etc. makes it so I don't have the ugly http://tempuri.org/ namespace,开发者_如何学运维 but how can I change the prefix?