diff --git a/src/main/scala/com/github/shadowsocks/ShadowVpnService.scala b/src/main/scala/com/github/shadowsocks/ShadowVpnService.scala
index 2dc8214f..c1b2e44f 100644
--- a/src/main/scala/com/github/shadowsocks/ShadowVpnService.scala
+++ b/src/main/scala/com/github/shadowsocks/ShadowVpnService.scala
@@ -373,14 +373,13 @@ class ShadowVpnService extends VpnService {
 
   def onDisconnect() {
     val sb = new StringBuilder
-    if (!waitForProcess("redsocks")) {
-      sb.append("kill -9 `cat /data/data/com.github.shadowsocks/redsocks.pid`").append("\n")
-    }
     if (!waitForProcess("shadowsocks")) {
-      sb.append("kill -9 `cat /data/data/com.github.shadowsocks/shadowsocks.pid`").append("\n")
+      sb ++= "kill -9 `cat /data/data/com.github.shadowsocks/shadowsocks.pid`" ++= "\n"
+      sb ++= "killall -9 shadowsocks" ++= "\n"
     }
     if (!waitForProcess("tun2socks")) {
-      sb.append("kill -9 `cat /data/data/com.github.shadowsocks/tun2socks.pid`").append("\n")
+      sb ++= "kill -9 `cat /data/data/com.github.shadowsocks/tun2socks.pid`" ++= "\n"
+      sb ++= "killall -9 tun2socks" ++= "\n"
     }
     Utils.runCommand(sb.toString())
   }
diff --git a/src/main/scala/com/github/shadowsocks/Shadowsocks.scala b/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
index 68935d97..c3cdc825 100644
--- a/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
+++ b/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
@@ -233,17 +233,21 @@ class Shadowsocks extends UnifiedSherlockPreferenceActivity with CompoundButton.
 
   private def crash_recovery() {
     val sb = new StringBuilder
+
     sb.append(Utils.getIptables).append(" -t nat -F OUTPUT").append("\n")
     sb.append("kill -9 `cat /data/data/com.github.shadowsocks/pdnsd.pid`").append("\n")
-    sb.append("kill -9 `cat /data/data/com.github.shadowsocks/redsocks.pid`").append("\n")
     sb.append("kill -9 `cat /data/data/com.github.shadowsocks/shadowsocks.pid`").append("\n")
     sb.append("kill -9 `cat /data/data/com.github.shadowsocks/polipo.pid`").append("\n")
     sb.append("kill -9 `cat /data/data/com.github.shadowsocks/tun2socks.pid`").append("\n")
     sb.append("killall -9 pdnsd").append("\n")
-    sb.append("killall -9 redsocks").append("\n")
     sb.append("killall -9 shadowsocks").append("\n")
     sb.append("killall -9 polipo").append("\n")
     sb.append("killall -9 tun2socks").append("\n")
+    Utils.runCommand(sb.toString())
+
+    sb.clear()
+    sb.append("kill -9 `cat /data/data/com.github.shadowsocks/redsocks.pid`").append("\n")
+    sb.append("killall -9 redsocks").append("\n")
     Utils.runRootCommand(sb.toString())
   }
 
diff --git a/src/main/scala/com/github/shadowsocks/ShadowsocksService.scala b/src/main/scala/com/github/shadowsocks/ShadowsocksService.scala
index 51154c53..4055485b 100644
--- a/src/main/scala/com/github/shadowsocks/ShadowsocksService.scala
+++ b/src/main/scala/com/github/shadowsocks/ShadowsocksService.scala
@@ -368,20 +368,28 @@ class ShadowsocksService extends Service {
 
   def onDisconnect() {
     Utils.runRootCommand(Utils.getIptables + " -t nat -F OUTPUT")
+
     val sb = new StringBuilder
-    sb.append("kill -9 `cat /data/data/com.github.shadowsocks/redsocks.pid`").append("\n")
+    sb ++= "kill -9 `cat /data/data/com.github.shadowsocks/redsocks.pid`" ++= "\n"
+    sb ++= "killall -9 redsocks" ++= "\n"
+    Utils.runRootCommand(sb.toString())
+
+    sb.clear()
     if (!waitForProcess("pdnsd")) {
-      sb.append("kill -9 `cat /data/data/com.github.shadowsocks/pdnsd.pid`").append("\n")
+      sb ++= "kill -9 `cat /data/data/com.github.shadowsocks/pdnsd.pid`" ++= "\n"
+      sb ++= "killall -9 pdnsd" ++= "\n"
     }
     if (!waitForProcess("shadowsocks")) {
-      sb.append("kill -9 `cat /data/data/com.github.shadowsocks/shadowsocks.pid`").append("\n")
+      sb ++= "kill -9 `cat /data/data/com.github.shadowsocks/shadowsocks.pid`" ++= "\n"
+      sb ++= "killall -9 shadowsocks" ++= "\n"
     }
     if (isHTTPProxy) {
       if (!waitForProcess("polipo")) {
-        sb.append("kill -9 `cat /data/data/com.github.shadowsocks/polipo.pid`").append("\n")
+        sb ++= "kill -9 `cat /data/data/com.github.shadowsocks/polipo.pid`" ++= "\n"
+        sb ++= "killall -9 polipo" ++= "\n"
       }
     }
-    Utils.runRootCommand(sb.toString())
+    Utils.runCommand(sb.toString())
   }
 
   override def onStart(intent: Intent, startId: Int) {