diff --git a/src/main/scala/com/github/shadowsocks/package.scala b/src/main/scala/com/github/shadowsocks/package.scala
index d0b75ee3..a934b4c8 100644
--- a/src/main/scala/com/github/shadowsocks/package.scala
+++ b/src/main/scala/com/github/shadowsocks/package.scala
@@ -2,17 +2,16 @@ package com.github
 
 import scala.concurrent.ExecutionContext.Implicits.global
 import scala.concurrent.Future
-import scala.util.{Success, Failure, Try}
+import scala.util.{Failure, Try}
 
 /**
   * @author Mygod
   */
 package object shadowsocks {
-
-  val handleFailure: PartialFunction[Try[_], Unit] = {
-    case Success(_) =>
+  private val handleFailure: Try[_] => Unit = {
     case Failure(e) => e.printStackTrace()
+    case _ =>
   }
 
   def ThrowableFuture[T](f: => T) = Future(f) onComplete handleFailure
-}
\ No newline at end of file
+}