diff --git a/app/src/main/java/me/lucky/wasted/AppNotificationManager.kt b/app/src/main/java/me/lucky/wasted/AppNotificationManager.kt
deleted file mode 100644
index de946cf..0000000
--- a/app/src/main/java/me/lucky/wasted/AppNotificationManager.kt
+++ /dev/null
@@ -1,25 +0,0 @@
-package me.lucky.wasted
-
-import android.app.NotificationChannel
-import android.app.NotificationManager
-import android.content.Context
-import android.os.Build
-
-class AppNotificationManager(private val ctx: Context) {
-    companion object {
-        const val CHANNEL_DEFAULT_ID = "default"
-    }
-
-    private val manager = ctx.getSystemService(NotificationManager::class.java)
-
-    fun createNotificationChannels() {
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) return
-        manager?.createNotificationChannel(
-            NotificationChannel(
-                CHANNEL_DEFAULT_ID,
-                ctx.getString(R.string.notification_channel_default_name),
-                NotificationManager.IMPORTANCE_LOW,
-            )
-        )
-    }
-}
diff --git a/app/src/main/java/me/lucky/wasted/ForegroundService.kt b/app/src/main/java/me/lucky/wasted/ForegroundService.kt
index 585fe0e..fde767d 100644
--- a/app/src/main/java/me/lucky/wasted/ForegroundService.kt
+++ b/app/src/main/java/me/lucky/wasted/ForegroundService.kt
@@ -45,7 +45,7 @@ class ForegroundService : Service() {
         super.onStartCommand(intent, flags, startId)
         startForeground(
             NOTIFICATION_ID,
-            NotificationCompat.Builder(this, AppNotificationManager.CHANNEL_DEFAULT_ID)
+            NotificationCompat.Builder(this, NotificationManager.CHANNEL_DEFAULT_ID)
                 .setContentTitle(getString(R.string.foreground_service_notification_title))
                 .setSmallIcon(android.R.drawable.ic_delete)
                 .setPriority(NotificationCompat.PRIORITY_LOW)
diff --git a/app/src/main/java/me/lucky/wasted/MainActivity.kt b/app/src/main/java/me/lucky/wasted/MainActivity.kt
index c01ab32..980cf7f 100644
--- a/app/src/main/java/me/lucky/wasted/MainActivity.kt
+++ b/app/src/main/java/me/lucky/wasted/MainActivity.kt
@@ -56,7 +56,7 @@ open class MainActivity : AppCompatActivity() {
     private fun init() {
         prefs = Preferences(this)
         admin = DeviceAdminManager(this)
-        AppNotificationManager(this).createNotificationChannels()
+        NotificationManager(this).createNotificationChannels()
         if (prefs.code == "") prefs.code = makeCode()
         updateCodeColorState()
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.P) hideESIM()
diff --git a/app/src/main/java/me/lucky/wasted/NotificationManager.kt b/app/src/main/java/me/lucky/wasted/NotificationManager.kt
new file mode 100644
index 0000000..5becc0b
--- /dev/null
+++ b/app/src/main/java/me/lucky/wasted/NotificationManager.kt
@@ -0,0 +1,20 @@
+package me.lucky.wasted
+
+import android.content.Context
+import androidx.core.app.NotificationChannelCompat
+import androidx.core.app.NotificationManagerCompat
+
+class NotificationManager(ctx: Context) {
+    companion object {
+        const val CHANNEL_DEFAULT_ID = "default"
+    }
+
+    private val manager = NotificationManagerCompat.from(ctx)
+
+    fun createNotificationChannels() {
+        manager.createNotificationChannel(NotificationChannelCompat.Builder(
+            CHANNEL_DEFAULT_ID,
+            NotificationManagerCompat.IMPORTANCE_LOW,
+        ).build())
+    }
+}
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index e8a4df0..726b285 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -19,7 +19,6 @@
     <string name="wipe_on_inactivity_switch">Стереть при неактивности</string>
     <string name="wipe_on_inactivity_description">Стереть данные когда устройство не разблокируется N дней.</string>
     <string name="wipe_on_inactivity_days">Дней</string>
-    <string name="notification_channel_default_name">Дефолт</string>
     <string name="ok">OK</string>
     <string name="wipe_job_description">Стереть данные при неактивности</string>
     <string name="wipe_job_schedule_failed_popup">Не удалось запланировать сервис стирания данных</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index bde7c2e..ea87cad 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -19,7 +19,6 @@
     <string name="wipe_on_inactivity_switch">Wipe on inactivity</string>
     <string name="wipe_on_inactivity_description">Wipe a device when it was not unlocked for N days.</string>
     <string name="wipe_on_inactivity_days">Days</string>
-    <string name="notification_channel_default_name">Default</string>
     <string name="ok">OK</string>
     <string name="wipe_job_description">Wipe a device on inactivity</string>
     <string name="wipe_job_schedule_failed_popup">Failed to schedule a wipe job</string>