diff --git a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/BaseJvmPlugin.kt b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/BaseJvmPlugin.kt
index 775f28e9..cfece392 100644
--- a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/BaseJvmPlugin.kt
+++ b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/BaseJvmPlugin.kt
@@ -26,7 +26,9 @@ abstract class BaseJvmPlugin<T>(open val configActor: ConfigActor<T>) :
     // IBuildConfigContributor
 
     private fun hasSourceFiles(project: Project)
-            = KFiles.findSourceFiles(project.directory, project.sourceDirectories, listOf("java")).size > 0
+            = KFiles.findSourceFiles(project.directory, project.sourceDirectories, sourceSuffixes()).size > 0
 
     fun affinity(project: Project) = if (hasSourceFiles(project)) 1 else 0
+
+    abstract fun sourceSuffixes() : List<String>
 }
\ No newline at end of file
diff --git a/src/main/kotlin/com/beust/kobalt/plugin/java/JavaPlugin.kt b/src/main/kotlin/com/beust/kobalt/plugin/java/JavaPlugin.kt
index 26e14977..59db628f 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/java/JavaPlugin.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/java/JavaPlugin.kt
@@ -17,7 +17,8 @@ class JavaPlugin @Inject constructor(val javaCompiler: JavaCompiler, override va
             ITestSourceDirectoryContributor, IBuildConfigContributor {
 
     companion object {
-        const val PLUGIN_NAME = "Java"
+        val PLUGIN_NAME = "Java"
+        val SOURCE_SUFFIXES = listOf("java")
     }
 
     override val name = PLUGIN_NAME
@@ -26,6 +27,8 @@ class JavaPlugin @Inject constructor(val javaCompiler: JavaCompiler, override va
     override fun affinity(project: Project, context: KobaltContext) =
             if (accept(project)) 1 else 0
 
+    override fun sourceSuffixes() = SOURCE_SUFFIXES
+
     override fun generateDoc(project: Project, context: KobaltContext, info: CompilerActionInfo) : TaskResult {
         val result =
             if (info.sourceFiles.size > 0) {
@@ -44,7 +47,7 @@ class JavaPlugin @Inject constructor(val javaCompiler: JavaCompiler, override va
                         configurationFor(project)?.compilerArgs ?: listOf<String>())
 
     // ICompilerContributor
-    val compiler = CompilerDescription(listOf("java"), "java", javaCompiler)
+    val compiler = CompilerDescription(SOURCE_SUFFIXES, "java", javaCompiler)
 
     override fun compilersFor(project: Project, context: KobaltContext) = listOf(compiler)
 
diff --git a/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinPlugin.kt b/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinPlugin.kt
index b2fbd258..48f46cc0 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinPlugin.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinPlugin.kt
@@ -24,11 +24,14 @@ class KotlinPlugin @Inject constructor(val executors: KobaltExecutors, val depen
         IBuildConfigContributor {
 
     companion object {
-        const val PLUGIN_NAME = "Kotlin"
+        val PLUGIN_NAME = "Kotlin"
+        val SOURCE_SUFFIXES = listOf("kt")
     }
 
     override val name = PLUGIN_NAME
 
+    override fun sourceSuffixes() = SOURCE_SUFFIXES
+
     // IDocContributor
     override fun affinity(project: Project, context: KobaltContext) =
             if (project.sourceDirectories.any { it.contains("kotlin") }) 2 else 0
@@ -108,7 +111,7 @@ class KotlinPlugin @Inject constructor(val executors: KobaltExecutors, val depen
     // ICompilerContributor
 
     /** The Kotlin compiler should run before the Java one, hence priority - 5 */
-    val compiler = CompilerDescription(listOf("kt"), "kotlin", KotlinCompiler(),
+    val compiler = CompilerDescription(SOURCE_SUFFIXES, "kotlin", KotlinCompiler(),
         ICompilerDescription.DEFAULT_PRIORITY - 5)
 
     override fun compilersFor(project: Project, context: KobaltContext) = arrayListOf(compiler)