diff --git a/services/web/public/coffee/ide/editor/sharejs/vendor/client/ace.coffee b/services/web/public/coffee/ide/editor/sharejs/vendor/client/ace.coffee
index 462aa456f0..997116fc02 100644
--- a/services/web/public/coffee/ide/editor/sharejs/vendor/client/ace.coffee
+++ b/services/web/public/coffee/ide/editor/sharejs/vendor/client/ace.coffee
@@ -145,6 +145,7 @@ window.sharejs.extendDoc 'attach_ace', (editor, keepEditorContents, maxDocLength
     check()
 
   doc.detach_ace = ->
+    # TODO: can we remove the insert and delete event callbacks?
     editorDoc.removeListener 'change', editorListener
     delete doc.detach_ace