diff --git a/ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/MediaPlayerController.kt b/ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/MediaPlayerController.kt
index 57ed1aca..45c72385 100644
--- a/ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/MediaPlayerController.kt
+++ b/ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/MediaPlayerController.kt
@@ -23,6 +23,7 @@ import com.google.common.util.concurrent.FutureCallback
 import com.google.common.util.concurrent.Futures
 import com.google.common.util.concurrent.MoreExecutors
 import io.reactivex.rxjava3.disposables.CompositeDisposable
+import java.io.File
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@@ -42,7 +43,6 @@ import org.moire.ultrasonic.util.FileUtil
 import org.moire.ultrasonic.util.MainThreadExecutor
 import org.moire.ultrasonic.util.Settings
 import timber.log.Timber
-import java.io.File
 
 /**
  * The implementation of the Media Player Controller.