diff --git a/js/media/elementSource.js b/js/media/elementSource.js
index 61df4398..7c0c6235 100644
--- a/js/media/elementSource.js
+++ b/js/media/elementSource.js
@@ -69,6 +69,7 @@ export default class ElementSource {
   }
 
   // Async for now, for compatibility with BufferAudioSource
+  // TODO: This does not need to be async
   async loadUrl(url) {
     this._audio.src = url;
   }