diff --git a/library/ui/src/main/java/com/google/android/exoplayer2/ui/PlayerNotificationManager.java b/library/ui/src/main/java/com/google/android/exoplayer2/ui/PlayerNotificationManager.java
index 9decf900a7..569fc93456 100644
--- a/library/ui/src/main/java/com/google/android/exoplayer2/ui/PlayerNotificationManager.java
+++ b/library/ui/src/main/java/com/google/android/exoplayer2/ui/PlayerNotificationManager.java
@@ -1006,6 +1006,8 @@ public class PlayerNotificationManager {
    *     NotificationCompat.Builder#build()} to obtain the notification, or {@code null} if no
    *     notification should be displayed.
    */
+  // incompatible types in argument.
+  @SuppressWarnings("nullness:argument.type.incompatible")
   @Nullable
   protected NotificationCompat.Builder createNotification(
       Player player,