diff --git a/app/src/main/kotlin/jackall/overlaymulticounter/activity/MainActivity.kt b/app/src/main/kotlin/jackall/overlaymulticounter/activity/MainActivity.kt
index 9495e86..bee88a1 100644
--- a/app/src/main/kotlin/jackall/overlaymulticounter/activity/MainActivity.kt
+++ b/app/src/main/kotlin/jackall/overlaymulticounter/activity/MainActivity.kt
@@ -21,6 +21,7 @@
         binding = DataBindingUtil.setContentView(this, R.layout.activity_main)
         mainViewModel = ViewModelProviders.of(this, MainViewModel.Factory()).get(MainViewModel::class.java)
         binding.mainViewModel = mainViewModel
+        lifecycle.addObserver(mainViewModel)
 
         if (CounterRealmHelper().getNextId() == 0) {
             CounterRealmHelper().insert(