diff --git a/adapters/urltest.go b/adapters/urltest.go
index 63aef470..7608024f 100644
--- a/adapters/urltest.go
+++ b/adapters/urltest.go
@@ -19,6 +19,7 @@ type URLTest struct {
 	addr   *C.Addr
 	fast   C.Proxy
 	delay  time.Duration
+	done   chan struct{}
 }
 
 func (u *URLTest) Name() string {
@@ -29,11 +30,21 @@ func (u *URLTest) Generator(addr *C.Addr) (adapter C.ProxyAdapter, err error) {
 	return u.fast.Generator(addr)
 }
 
+func (u *URLTest) Close() {
+	u.done <- struct{}{}
+}
+
 func (u *URLTest) loop() {
-	tick := time.Tick(u.delay)
+	tick := time.NewTicker(u.delay)
 	go u.speedTest()
-	for range tick {
-		go u.speedTest()
+Loop:
+	for {
+		select {
+		case <-tick.C:
+			go u.speedTest()
+		case <-u.done:
+			break Loop
+		}
 	}
 }
 
@@ -142,6 +153,7 @@ func NewURLTest(name string, proxys []C.Proxy, rawURL string, delay time.Duratio
 		addr:   addr,
 		fast:   proxys[0],
 		delay:  delay,
+		done:   make(chan struct{}),
 	}
 	go urlTest.loop()
 	return urlTest, nil
diff --git a/tunnel/tunnel.go b/tunnel/tunnel.go
index e2879101..8b7b696e 100644
--- a/tunnel/tunnel.go
+++ b/tunnel/tunnel.go
@@ -48,7 +48,7 @@ func (t *Tunnel) UpdateConfig() (err error) {
 		return
 	}
 
-	// clear proxys and rules
+	// empty proxys and rules
 	proxys := make(map[string]C.Proxy)
 	rules := []C.Rule{}
 
@@ -78,10 +78,6 @@ func (t *Tunnel) UpdateConfig() (err error) {
 		}
 	}
 
-	// init proxy
-	proxys["DIRECT"] = adapters.NewDirect(t.traffic)
-	proxys["REJECT"] = adapters.NewReject()
-
 	// parse rules
 	for _, key := range rulesConfig.Keys() {
 		rule := strings.Split(key.Name(), ",")
@@ -130,9 +126,21 @@ func (t *Tunnel) UpdateConfig() (err error) {
 		}
 	}
 
+	// init proxy
+	proxys["DIRECT"] = adapters.NewDirect(t.traffic)
+	proxys["REJECT"] = adapters.NewReject()
+
 	t.configLock.Lock()
 	defer t.configLock.Unlock()
 
+	// stop url-test
+	for _, elm := range t.proxys {
+		urlTest, ok := elm.(*adapters.URLTest)
+		if ok {
+			urlTest.Close()
+		}
+	}
+
 	t.proxys = proxys
 	t.rules = rules