diff --git a/app/assets/stylesheets/editor.css.scss b/app/assets/stylesheets/editor.css.scss
index 81504ba0..6cf2975c 100644
--- a/app/assets/stylesheets/editor.css.scss
+++ b/app/assets/stylesheets/editor.css.scss
@@ -10,7 +10,7 @@ button i.fa-spin {
 .frame {
   display: none;
   height: 200px;
-  width: 400px;
+  width: auto;
 
   audio, img, video {
     max-width: 100%;
diff --git a/app/views/exercises/_form.html.slim b/app/views/exercises/_form.html.slim
index 7a601852..c284c0a3 100644
--- a/app/views/exercises/_form.html.slim
+++ b/app/views/exercises/_form.html.slim
@@ -36,7 +36,7 @@
 
   ul#files.list-unstyled.panel-group
     = f.fields_for :files do |files_form|
-      = render('file_form', f: files_form, file: files_form.object)
+      = render('file_form', f: files_form, file: files_form.object, code: @files)
 
   a#add-file.btn.btn-default.btn-sm.pull-right href='#' = t('.add_file')
   ul#dummies.hidden = f.fields_for(:files, CodeOcean::File.new, child_index: 'index') do |files_form|