diff --git a/proposal/myrmidon/src/manifest/builtin-ant-descriptor.xml b/proposal/myrmidon/src/manifest/builtin-ant-descriptor.xml
index b4a893f33..44b7b9d9b 100644
--- a/proposal/myrmidon/src/manifest/builtin-ant-descriptor.xml
+++ b/proposal/myrmidon/src/manifest/builtin-ant-descriptor.xml
@@ -6,6 +6,7 @@
     <listener name="classic" classname="org.apache.myrmidon.listeners.ClassicProjectListener"/>
     <aspect name="noop" classname="org.apache.myrmidon.aspects.NoopAspectHandler"/>
     <project-builder name="ant" classname="org.apache.myrmidon.components.builder.DefaultProjectBuilder"/>
+    <project-builder name="xml" classname="org.apache.myrmidon.components.builder.DefaultProjectBuilder"/>
     <project-builder name="ati" classname="org.apache.myrmidon.components.builder.ATIProjectBuilder"/>
 
     <!-- basic tasks/datatypes/coverters required in most environments -->