diff --git a/src/main/scala/com/github/shadowsocks/ServiceBoundContext.scala b/src/main/scala/com/github/shadowsocks/ServiceBoundContext.scala
index 703cbcc8..debd6cef 100644
--- a/src/main/scala/com/github/shadowsocks/ServiceBoundContext.scala
+++ b/src/main/scala/com/github/shadowsocks/ServiceBoundContext.scala
@@ -62,7 +62,6 @@ trait ServiceBoundContext extends Context with IBinder.DeathRecipient {
 
       connection = new ShadowsocksServiceConnection()
       bindService(intent, connection, Context.BIND_AUTO_CREATE)
-      startService(intent)
     }
   }
 
diff --git a/src/main/scala/com/github/shadowsocks/ShadowsocksRunnerService.scala b/src/main/scala/com/github/shadowsocks/ShadowsocksRunnerService.scala
index 7613556e..0bb2baab 100644
--- a/src/main/scala/com/github/shadowsocks/ShadowsocksRunnerService.scala
+++ b/src/main/scala/com/github/shadowsocks/ShadowsocksRunnerService.scala
@@ -43,6 +43,7 @@ import android.app.Service
 import android.content.Intent
 import android.net.VpnService
 import android.os.{IBinder, Handler}
+import com.github.shadowsocks.utils.Action
 import com.github.shadowsocks.utils.ConfigUtils
 import com.github.shadowsocks.ShadowsocksApplication.app
 
@@ -72,6 +73,11 @@ class ShadowsocksRunnerService extends Service with ServiceBoundContext {
   override def onCreate() {
     super.onCreate()
     attachService()
+
+    val s = if (app.isNatEnabled) classOf[ShadowsocksNatService] else classOf[ShadowsocksVpnService]
+    val intent = new Intent(this, s)
+    intent.setAction(Action.SERVICE)
+    startService(intent)
   }
 
   override def onDestroy() {