diff --git a/kobalt/src/Build.kt b/kobalt/src/Build.kt
index 9070708e..c06c3c40 100644
--- a/kobalt/src/Build.kt
+++ b/kobalt/src/Build.kt
@@ -8,6 +8,7 @@ import com.beust.kobalt.plugin.kotlin.*
 import com.beust.kobalt.plugin.packaging.assemble
 import com.beust.kobalt.plugin.publish.github
 import com.beust.kobalt.plugin.publish.jcenter
+import com.beust.kobalt.plugin.retrolambda.*
 import com.beust.kobalt.test
 import java.io.File
 import java.nio.file.Files
@@ -34,6 +35,9 @@ val wrapper = javaProject {
         }
     }
 
+//    retrolambda {
+//    }
+
     productFlavor("dev") {
     }
 
diff --git a/src/main/kotlin/com/beust/kobalt/plugin/retrolambda/RetrolambdaPlugin.kt b/src/main/kotlin/com/beust/kobalt/plugin/retrolambda/RetrolambdaPlugin.kt
index de8d33fb..dbf84952 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/retrolambda/RetrolambdaPlugin.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/retrolambda/RetrolambdaPlugin.kt
@@ -32,7 +32,9 @@ class RetrolambdaPlugin @Inject constructor(val dependencyManager: DependencyMan
     }
 
     // IClasspathContributor
-    override fun entriesFor(project: Project?) = listOf(JAR)
+    override fun entriesFor(project: Project?) =
+            if (project != null && configurationFor(project) != null) listOf(JAR)
+            else emptyList()
 
     @Task(name = "retrolambda", description = "Run Retrolambda",
             alwaysRunAfter = arrayOf(JvmCompilerPlugin.TASK_COMPILE))