diff --git a/core/src/test/scala/org/apache/spark/rpc/akka/AkkaRpcEnvSuite.scala b/core/src/test/scala/org/apache/spark/rpc/akka/AkkaRpcEnvSuite.scala
index 4fdd7a7358519..e7d58c4634c6e 100644
--- a/core/src/test/scala/org/apache/spark/rpc/akka/AkkaRpcEnvSuite.scala
+++ b/core/src/test/scala/org/apache/spark/rpc/akka/AkkaRpcEnvSuite.scala
@@ -17,8 +17,6 @@
 
 package org.apache.spark.rpc.akka
 
-import scala.language.postfixOps
-
 import org.apache.spark.{SecurityManager, SparkConf}
 import org.apache.spark.rpc._