diff --git a/src/js/tracks/audio-track-list.js b/src/js/tracks/audio-track-list.js
index 85061e13..f4250198 100644
--- a/src/js/tracks/audio-track-list.js
+++ b/src/js/tracks/audio-track-list.js
@@ -29,6 +29,7 @@ class AudioTrackList extends TrackList {
       this.trigger('change');
     });
   }
+
   addTrack(track) {
     this.addTrack_(track);
   }