diff --git a/js/buttons/BackButton.js b/js/buttons/BackButton.js
index 643970f6b..a50c4e6eb 100644
--- a/js/buttons/BackButton.js
+++ b/js/buttons/BackButton.js
@@ -49,7 +49,7 @@ class BackButton extends RectangularPushButton {
     // Create and add the default sound generator if none was provided.
     if ( !options.soundPlayer ) {
       const goBackSoundClip = new SoundClip( goBackSound, { initialOutputLevel: 0.35 } );
-      soundManager.addSoundGenerator( goBackSoundClip );
+      soundManager.addSoundGenerator( goBackSoundClip, { categoryName: 'user-interface' } );
       options.soundPlayer = goBackSoundClip;
     }