diff --git a/app/controllers/archives_controller.rb b/app/controllers/archives_controller.rb
index b597ab8..9d740e1 100644
--- a/app/controllers/archives_controller.rb
+++ b/app/controllers/archives_controller.rb
@@ -228,7 +228,7 @@ class ArchivesController < ApplicationController
 						render "redirect_to_file",:layout=>false
 					else
 						user_agent = request.user_agent.downcase
-						@escaped_file_name = user_agent.include?(/(msie|trident)/) ? CGI::escape(@filename) : @filename
+						@escaped_file_name = user_agent.match(/(msie|trident)/) ? CGI::escape(@filename) : @filename
 						send_file(@path, :type=>"application/octet-stream", :filename => @escaped_file_name, :x_sendfile=> true)
 					end
 				end