diff --git a/core/src/main/scala/org/apache/spark/status/api/v1/OneStageResource.scala b/core/src/main/scala/org/apache/spark/status/api/v1/OneStageResource.scala
index 0040cf6dc5f53..d13c2c77205e0 100644
--- a/core/src/main/scala/org/apache/spark/status/api/v1/OneStageResource.scala
+++ b/core/src/main/scala/org/apache/spark/status/api/v1/OneStageResource.scala
@@ -115,7 +115,7 @@ private[v1] class OneStageResource(uiRoot: UIRoot) {
       def getStatusInfoUi(status: StageStatus, infos: Seq[StageInfo]): Seq[StageStatusInfoUi] = {
         infos.filter { _.stageId == stageId }.map { info =>
           val ui = listener.stageIdToData.getOrElse((info.stageId, info.attemptId),
-            //this is an internal error -- we should always have uiData
+            // this is an internal error -- we should always have uiData
             throw new SparkException(
               s"no stage ui data found for stage: ${info.stageId}:${info.attemptId}")
           )