diff --git a/ultrasonic/src/main/kotlin/org/moire/ultrasonic/playback/PlaybackService.kt b/ultrasonic/src/main/kotlin/org/moire/ultrasonic/playback/PlaybackService.kt
index 5c675fbb..80bf9cff 100644
--- a/ultrasonic/src/main/kotlin/org/moire/ultrasonic/playback/PlaybackService.kt
+++ b/ultrasonic/src/main/kotlin/org/moire/ultrasonic/playback/PlaybackService.kt
@@ -17,6 +17,7 @@ package org.moire.ultrasonic.playback
 
 import android.app.PendingIntent
 import android.content.Intent
+import android.os.Build
 import androidx.media3.common.AudioAttributes
 import androidx.media3.common.C
 import androidx.media3.common.C.CONTENT_TYPE_MUSIC
@@ -138,7 +139,7 @@ class PlaybackService : MediaLibraryService(), KoinComponent {
         val intent = Intent(this, NavigationActivity::class.java)
             .addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP)
         var flags = PendingIntent.FLAG_UPDATE_CURRENT
-        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
             // needed starting Android 12 (S = 31)
             flags = flags or PendingIntent.FLAG_IMMUTABLE
         }
diff --git a/ultrasonic/src/main/kotlin/org/moire/ultrasonic/provider/UltrasonicAppWidgetProvider.kt b/ultrasonic/src/main/kotlin/org/moire/ultrasonic/provider/UltrasonicAppWidgetProvider.kt
index 79a71759..ddc11e3f 100644
--- a/ultrasonic/src/main/kotlin/org/moire/ultrasonic/provider/UltrasonicAppWidgetProvider.kt
+++ b/ultrasonic/src/main/kotlin/org/moire/ultrasonic/provider/UltrasonicAppWidgetProvider.kt
@@ -13,6 +13,7 @@ import android.appwidget.AppWidgetProvider
 import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
+import android.os.Build
 import android.os.Environment
 import android.view.KeyEvent
 import android.widget.RemoteViews
@@ -172,7 +173,7 @@ open class UltrasonicAppWidgetProvider : AppWidgetProvider() {
             intent.action = "android.intent.action.MAIN"
             intent.addCategory("android.intent.category.LAUNCHER")
             var flags = PendingIntent.FLAG_UPDATE_CURRENT
-            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                 // needed starting Android 12 (S = 31)
                 flags = flags or PendingIntent.FLAG_IMMUTABLE
             }
@@ -189,7 +190,7 @@ open class UltrasonicAppWidgetProvider : AppWidgetProvider() {
                 KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE)
             )
             flags = 0
-            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                 // needed starting Android 12 (S = 31)
                 flags = flags or PendingIntent.FLAG_IMMUTABLE
             }
diff --git a/ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/DownloadService.kt b/ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/DownloadService.kt
index 5f3fcfe6..f6b2ed49 100644
--- a/ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/DownloadService.kt
+++ b/ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/DownloadService.kt
@@ -7,7 +7,6 @@
 
 package org.moire.ultrasonic.service
 
-import android.annotation.SuppressLint
 import android.app.Notification
 import android.app.NotificationChannel
 import android.app.NotificationManager
@@ -158,7 +157,7 @@ class DownloadService : Service() {
         val intent = Intent(this, NavigationActivity::class.java)
             .addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP)
         var flags = PendingIntent.FLAG_UPDATE_CURRENT
-        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
             // needed starting Android 12 (S = 31)
             flags = flags or PendingIntent.FLAG_IMMUTABLE
         }