diff --git a/core/src/main/scala/org/apache/spark/deploy/DeployMessage.scala b/core/src/main/scala/org/apache/spark/deploy/DeployMessage.scala
index b8856e6e001ab75a0c2bdc53d1f1beff4a93a10b..1cfff5e565d173c730e65ff301b26b59d7c31085 100644
--- a/core/src/main/scala/org/apache/spark/deploy/DeployMessage.scala
+++ b/core/src/main/scala/org/apache/spark/deploy/DeployMessage.scala
@@ -129,6 +129,6 @@ private[deploy] object DeployMessages {
 
   case object RequestWebUIPort
 
-  case class WebUIPortResponse(webUIBoundPort: Int) {}
+  case class WebUIPortResponse(webUIBoundPort: Int)
 
 }