diff --git a/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt b/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
index 84fb3825..1a9add3b 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
@@ -1449,7 +1449,6 @@ class BaresipService: Service() {
         var sipTrace = false
         var callActionUri = ""
         var isMainVisible = false
-        var isMainAlive = false
         var isMicMuted = false
 
         val uas = ArrayList<UserAgent>()
diff --git a/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt b/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt
index 7037eecf..3fd2a4f3 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt
@@ -637,8 +637,6 @@ class MainActivity : AppCompatActivity() {
             ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.RECORD_AUDIO),
                 MIC_PERMISSION_REQUEST_CODE)
 
-        BaresipService.isMainAlive = true
-
     } // OnCreate
 
     override fun onStart() {
@@ -723,8 +721,6 @@ class MainActivity : AppCompatActivity() {
         LocalBroadcastManager.getInstance(this).unregisterReceiver(serviceEventReceiver)
 
         BaresipService.activities.clear()
-        BaresipService.isMainAlive = false
-
     }
 
     override fun onNewIntent(intent: Intent) {