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 0b2ee9c008..55d10ca713 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
@@ -1244,6 +1244,7 @@ public class PlayerNotificationManager {
       builder.setGroup(groupKey);
     }
 
+    builder.setOnlyAlertOnce(true);
     return builder;
   }