diff --git a/Gemfile.lock b/Gemfile.lock
index 17116f0..8c65165 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -641,6 +641,3 @@ DEPENDENCIES
   unicorn
   web-console (~> 2.0)
   webmock
-
-BUNDLED WITH
-   1.10.6
diff --git a/app/controllers/downloads_controller.rb b/app/controllers/downloads_controller.rb
index 3139535..64c1676 100644
--- a/app/controllers/downloads_controller.rb
+++ b/app/controllers/downloads_controller.rb
@@ -3,12 +3,4 @@
 # Hydra::Controller::DownloadBehavior can be overridden.
 class DownloadsController < ApplicationController
   include Hydra::Controller::DownloadBehavior
-
-  def prepare_file_headers
-    send_file_headers! content_options
-    file.mime_type = self.request.format.to_s
-    response.headers['Content-Type'] = file.mime_type
-    self.content_type = file.mime_type
-  end
-
 end