720747
@@ -47,6 +47,7 @@
public class XTSSubsystemDefinition extends SimpleResourceDefinition {
 
     protected static final SimpleAttributeDefinition HOST_NAME =
             new SimpleAttributeDefinitionBuilder(CommonAttributes.HOST, ModelType.STRING)
+                    .setAllowNull(true)
                     .setDefaultValue(new ModelNode("default-host"))
                     .setAllowExpression(true)
                     .setXmlName(Attribute.NAME.getLocalName())
