Gradle JAXB detects folders as XSD dependency

[saw303]

Gradle JAXB detects folders as XSD dependency.

Caused by: java.io.FileNotFoundException: /home/abc/dev/projects/adcubum/ksd-server/common.config/src/main/resources/xsd (Is a directory)
at org.gradle.jacobo.schema.factory.DefaultDocumentFactory.createDocument(DefaultDocumentFactory.groovy:39)
at org.gradle.jacobo.schema.factory.DocumentFactory$createDocument$0.call(Unknown Source)
at org.gradle.jacobo.plugins.resolver.ExternalDependencyResolver.resolveDependencies(ExternalDependencyResolver.groovy:95)
at org.gradle.jacobo.plugins.resolver.ExternalDependencyResolver$_resolve_closure1_closure5.doCall(ExternalDependencyResolver.groovy:70)
at org.gradle.jacobo.plugins.resolver.ExternalDependencyResolver$_resolve_closure1.doCall(ExternalDependencyResolver.groovy:69)
at org.gradle.jacobo.plugins.resolver.ExternalDependencyResolver.resolve(ExternalDependencyResolver.groovy:52)
at org.gradle.jacobo.plugins.resolver.ExternalDependencyResolver$resolve$0.call(Unknown Source)
at org.gradle.jacobo.plugins.task.JaxbDependencyTree.start(JaxbDependencyTree.groovy:57)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)
... 64 more

This resolver method call retrieves a Filecollection containg directory.

If I remove the directory (using a debugger) from the collection, everything runs smooth.