diff --git a/app/controllers/upgrade_controller.rb b/app/controllers/upgrade_controller.rb
index 271b293..fdcf16a 100644
--- a/app/controllers/upgrade_controller.rb
+++ b/app/controllers/upgrade_controller.rb
@@ -38,7 +38,7 @@ class UpgradeController < ApplicationController
 				}
 			end
 			files = b.bulletin_files.collect do |bf|
-				file = request.protocol + request.host_with_port + bf.file.url if !bf.file.nil?
+				file = request.protocol + request.host_with_port + bf.file.url rescue nil
 				{
 					"title" => bf.title_translations,
 					"description" => bf.description_translations,