diff --git a/app/src/main/java/io/github/chronosx88/yggdrasil/MainActivity.kt b/app/src/main/java/io/github/chronosx88/yggdrasil/MainActivity.kt
index 1cc7adf..de74202 100644
--- a/app/src/main/java/io/github/chronosx88/yggdrasil/MainActivity.kt
+++ b/app/src/main/java/io/github/chronosx88/yggdrasil/MainActivity.kt
@@ -148,16 +148,20 @@ class MainActivity : AppCompatActivity() {
             connectivityManager?.let {
                 it.registerDefaultNetworkCallback(object : ConnectivityManager.NetworkCallback() {
                     override fun onAvailable(network: Network) {
-                        showToast("network on")
-                        stopVpn()
-                        Thread.sleep(1000)
-                        startVpn()
+                        if(isStarted) {
+                            showToast("network on")
+                            stopVpn()
+                            Thread.sleep(1000)
+                            startVpn()
+                        }
                     }
                     override fun onLost(network: Network?) {
-                        showToast("network off")
-                        stopVpn()
-                        Thread.sleep(1000)
-                        startVpn()
+                        if(isStarted) {
+                            showToast("network off")
+                            stopVpn()
+                            Thread.sleep(1000)
+                            startVpn()
+                        }
                     }
                 })
             }
@@ -168,11 +172,19 @@ class MainActivity : AppCompatActivity() {
                     Log.i(TAG, "Network state has been changed")
                     if ("android.net.conn.CONNECTIVITY_CHANGE" == intent.action) {
                         if (status == NetworkUtils.NETWORK_STATUS_NOT_CONNECTED) {
-                            showToast("network on")
-                            stopVpn()
+                            if(isStarted) {
+                                showToast("network on")
+                                stopVpn()
+                                Thread.sleep(1000)
+                                startVpn()
+                            }
                         } else {
-                            showToast("network of")
-                            startVpn()
+                            if(isStarted) {
+                                showToast("network off")
+                                stopVpn()
+                                Thread.sleep(1000)
+                                startVpn()
+                            }
                         }
                     }
                 }