diff --git a/src/main/res/values-zh/strings.xml b/src/main/res/values-zh/strings.xml
index f1690588..89d01881 100755
--- a/src/main/res/values-zh/strings.xml
+++ b/src/main/res/values-zh/strings.xml
@@ -46,7 +46,7 @@
   <string name="forward_stop">后台服务已停止。</string>
   <string name="service_failed">无法连接远程服务器</string>
   <string name="stop">停止服务</string>
-  <string name="stopping">正在关闭影梭</string>
+  <string name="stopping">正在关闭...</string>
   <string name="vpn_error">后台服务启动失败：\"%s\"。</string>
   <string name="ok_iknow">确定</string>
   <string name="port_alert">端口号应大于1024</string>
diff --git a/src/main/res/values/strings.xml b/src/main/res/values/strings.xml
index 05536625..fb8bb57b 100755
--- a/src/main/res/values/strings.xml
+++ b/src/main/res/values/strings.xml
@@ -57,7 +57,7 @@
   <string name="forward_stop">Shadowsocks stopped.</string>
   <string name="service_failed">Failed to connect the remote server</string>
   <string name="stop">Stop the service</string>
-  <string name="stopping">Shutting down Shadowsocks</string>
+  <string name="stopping">Shutting down...</string>
   <string name="vpn_error">Error: \"%s\".</string>
 
   <!-- alert category -->
diff --git a/src/main/scala/com/github/shadowsocks/Shadowsocks.scala b/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
index 016b0e70..a542ec30 100644
--- a/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
+++ b/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
@@ -340,7 +340,7 @@ class Shadowsocks
         Process.killProcess(pid_nat)
         Process.killProcess(pid_vpn)
       } catch {
-        case e: Throwable => Log.e(Shadowsocks.TAG, "unable to kill " + task, e)
+        case e: Throwable => Log.e(Shadowsocks.TAG, "unable to kill " + task)
       }
       cmd.append("rm -f %s%s-nat.pid".format(Path.BASE, task))
       cmd.append("rm -f %s%s-nat.conf".format(Path.BASE, task))
@@ -1006,6 +1006,11 @@ class Shadowsocks
                   .show()
               }
               setPreferenceEnabled(enabled = true)
+            case State.STOPPING =>
+              if (progressDialog == null) {
+                progressDialog = ProgressDialog
+                  .show(Shadowsocks.this, "", getString(R.string.stopping), true, true)
+              }
           }
         }
       }
diff --git a/src/main/scala/com/github/shadowsocks/ShadowsocksNatService.scala b/src/main/scala/com/github/shadowsocks/ShadowsocksNatService.scala
index 86730640..2c39505f 100644
--- a/src/main/scala/com/github/shadowsocks/ShadowsocksNatService.scala
+++ b/src/main/scala/com/github/shadowsocks/ShadowsocksNatService.scala
@@ -354,7 +354,7 @@ class ShadowsocksNatService extends Service with BaseService {
         cmd.append("kill -9 %d".format(pid))
         Process.killProcess(pid)
       } catch {
-        case e: Throwable => Log.e(TAG, "unable to kill " + task, e)
+        case e: Throwable => Log.e(TAG, "unable to kill " + task)
       }
       cmd.append("rm -f %s%s-nat.pid".format(Path.BASE, task))
       cmd.append("rm -f %s%s-nat.conf".format(Path.BASE, task))
diff --git a/src/main/scala/com/github/shadowsocks/ShadowsocksVpnService.scala b/src/main/scala/com/github/shadowsocks/ShadowsocksVpnService.scala
index 572dc701..0c512bde 100644
--- a/src/main/scala/com/github/shadowsocks/ShadowsocksVpnService.scala
+++ b/src/main/scala/com/github/shadowsocks/ShadowsocksVpnService.scala
@@ -368,7 +368,7 @@ class ShadowsocksVpnService extends VpnService with BaseService {
         val pid = scala.io.Source.fromFile(Path.BASE + task + "-vpn.pid").mkString.trim.toInt
         Process.killProcess(pid)
       } catch {
-        case e: Throwable => Log.e(TAG, "unable to kill " + task, e)
+        case e: Throwable => Log.e(TAG, "unable to kill " + task)
       }
     }
   }
diff --git a/src/main/scala/com/github/shadowsocks/utils/Utils.scala b/src/main/scala/com/github/shadowsocks/utils/Utils.scala
index f0f4b102..a9e78647 100644
--- a/src/main/scala/com/github/shadowsocks/utils/Utils.scala
+++ b/src/main/scala/com/github/shadowsocks/utils/Utils.scala
@@ -69,7 +69,7 @@ object Utils {
   val DEFAULT_ROOT: String = "/system/bin/su"
   val ALTERNATIVE_ROOT: String = "/system/xbin/su"
   val DEFAULT_IPTABLES: String = "/system/bin/iptables"
-  val ALTERNATIVE_IPTABLES: String = "/data/data/com.github.shadowsocks/iptables"
+  val ALTERNATIVE_IPTABLES: String = "iptables"
   val TIME_OUT: Int = -99
   var initialized: Boolean = false
   var hasRedirectSupport: Int = -1