diff --git a/app/src/main/java/code/name/monkey/retromusic/dialogs/SleepTimerDialog.kt b/app/src/main/java/code/name/monkey/retromusic/dialogs/SleepTimerDialog.kt
index e454d4a60..214bef24d 100755
--- a/app/src/main/java/code/name/monkey/retromusic/dialogs/SleepTimerDialog.kt
+++ b/app/src/main/java/code/name/monkey/retromusic/dialogs/SleepTimerDialog.kt
@@ -138,7 +138,7 @@ class SleepTimerDialog : DialogFragment() {
     }
 
     private fun makeTimerPendingIntent(flag: Int): PendingIntent? {
-        return PendingIntent.getService(requireActivity(), 0, makeTimerIntent(), flag)
+        return PendingIntent.getService(requireActivity(), 0, makeTimerIntent(), flag or PendingIntent.FLAG_IMMUTABLE)
     }
 
     private fun makeTimerIntent(): Intent {