diff --git a/settings.gradle b/settings.gradle
index 316fa06..779c980 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -24,7 +24,7 @@ if (target.exists()) {
                     .replaceAll('%LANG%', language)
                     .replaceAll('%TYPE%', docFormat)
                 )
-            def projectIdentifier = "${language}:${docFormat}"
+            def projectIdentifier = ("${f.parentFile.path}" - "${layout.rootDirectory.asFile.path}/").replaceAll("/",":")
             logger.info "include subproject ${projectIdentifier} in ${parentFilePath}"
             include(projectIdentifier)
             project(":${projectIdentifier}").projectDir = new File(parentFilePath)
diff --git a/subBuild.gradle b/subBuild.gradle
index f043569..9971175 100644
--- a/subBuild.gradle
+++ b/subBuild.gradle
@@ -87,8 +87,8 @@ task generateHTML (
     type: AsciidoctorTask,
     dependsOn: [copyImages, copyAsciidoc],
     description: 'use html5 as asciidoc backend') {
+    sourceDir = file("src")
     sources {
-        file("src")
         include 'arc42-template.adoc'
     }
     outputDir = new File( localBuildDir.html )
@@ -101,8 +101,8 @@ task generateDocbook (
         type: AsciidoctorTask,
         dependsOn: [copyImages, copyAsciidoc],
         description: 'use docbook as asciidoc backend') {
+    sourceDir = file("src")
     sources {
-        file("src")
         include 'arc42-template.adoc'
     }
     if (localBuildDir.docbook) {