diff --git a/src/main/scala/sbt/ParallelRunner.scala b/src/main/scala/sbt/ParallelRunner.scala
index 24d5507f9..f67c31e24 100644
--- a/src/main/scala/sbt/ParallelRunner.scala
+++ b/src/main/scala/sbt/ParallelRunner.scala
@@ -125,6 +125,7 @@ final class Distributor[D](scheduler: Scheduler[D], doWork: D => Option[String],
 		}
 		private class Worker(data: D) extends Thread with NotNull
 		{
+			override def interrupt() {}
 			override def run()
 			{
 				val result = Control.trapUnit("", log(data))(doWork(data))