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 2a350167..b71951d3 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinPlugin.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinPlugin.kt
@@ -149,6 +149,7 @@ class KotlinConfig(val project: Project) {
     fun args(vararg options: String) = args.addAll(options)
 
     /** The version of the Kotlin compiler */
+    @Directive
     var version: String? = null
 }