diff --git a/core/src/test/scala/org/apache/spark/scheduler/cluster/ClusterTaskSetManagerSuite.scala b/core/src/test/scala/org/apache/spark/scheduler/cluster/ClusterTaskSetManagerSuite.scala
index cb719d7ab9e25faf4a9613f2bf9e03c860af5f07..bb28a31a990bc78874892dd543f9557b255bbb1f 100644
--- a/core/src/test/scala/org/apache/spark/scheduler/cluster/ClusterTaskSetManagerSuite.scala
+++ b/core/src/test/scala/org/apache/spark/scheduler/cluster/ClusterTaskSetManagerSuite.scala
@@ -313,7 +313,7 @@ class ClusterTaskSetManagerSuite extends FunSuite with LocalSparkContext with Lo
   }
 
   def createTaskResult(id: Int): DirectTaskResult[Int] = {
-    val objectSer = SparkEnv.get.serializer.newInstance()
-    new DirectTaskResult[Int](objectSer.serialize(id), mutable.Map.empty, new TaskMetrics)
+    val valueSer = SparkEnv.get.serializer.newInstance()
+    new DirectTaskResult[Int](valueSer.serialize(id), mutable.Map.empty, new TaskMetrics)
   }
 }