diff --git a/app/models/attachment.rb b/app/models/attachment.rb
index b289b0f..ce522b9 100644
--- a/app/models/attachment.rb
+++ b/app/models/attachment.rb
@@ -255,7 +255,7 @@ class Attachment < ActiveRecord::Base
 
   def self.latest_attach(attachments, filename)
     attachments.sort_by(&:created_on).reverse.detect {
-      |att| att.filename.downcase == filename.downcase
+      |att| att.filename.downcase == CGI.unescape(filename.downcase)
      }
   end