diff --git a/app/controllers/uploads_controller.rb b/app/controllers/uploads_controller.rb
index 2030e6a54..a4df65274 100644
--- a/app/controllers/uploads_controller.rb
+++ b/app/controllers/uploads_controller.rb
@@ -44,7 +44,7 @@ class UploadsController < ApplicationController
 
   def preprocess
     @upload, @post, @source, @remote_size = UploadService::ControllerHelper.prepare(
-      url: params[:url], file: params[:file], ref: params[:ref]
+      url: upload_params[:source], file: upload_params[:file], ref: upload_params[:referer_url]
     )
     render body: nil
   end
diff --git a/app/javascript/src/javascripts/uploads.js b/app/javascript/src/javascripts/uploads.js
index 4d398d897..84f0a7390 100644
--- a/app/javascript/src/javascripts/uploads.js
+++ b/app/javascript/src/javascripts/uploads.js
@@ -87,7 +87,7 @@ Upload.initialize_info_bookmarklet = function() {
 Upload.initialize_info_manual = function() {
   $("#fetch-data-manual").click(function(e) {
     var source = $("#upload_source,#post_source").val();
-    var referer = $("#ref").val();
+    var referer = $("#upload_referer_url").val();
 
     if (/^https?:\/\//.test(source)) {
       $("#source-info span#loading-data").show();
diff --git a/app/views/uploads/new.html.erb b/app/views/uploads/new.html.erb
index a1a2be0a3..144572a0f 100644
--- a/app/views/uploads/new.html.erb
+++ b/app/views/uploads/new.html.erb
@@ -18,9 +18,8 @@
       <div id="client-errors" class="error-messages ui-state-error ui-corner-all" style="display:none"></div>
 
       <%= form_for(@upload, :html => {:multipart => true, :class => "simple_form", :id => "form"}) do |f| %>
-        <%= hidden_field_tag :url, params[:url] %>
-        <%= hidden_field_tag :ref, params[:ref] %>
         <%= f.hidden_field :md5_confirmation %>
+        <%= f.hidden_field :referer_url, value: params[:ref] %>
 
         <% if CurrentUser.can_upload_free? %>
           <div class="input">
@@ -160,7 +159,7 @@
       }
 
       $("#filedropzone").dropzone({ 
-        paramName: "file", 
+        paramName: "upload[file]", 
         url: "/uploads/preprocess", 
         createImageThumbnails: false,
         addRemoveLinks: false,