diff --git a/app/models/attachment.rb b/app/models/attachment.rb
index 1dbc86123..bdd749108 100644
--- a/app/models/attachment.rb
+++ b/app/models/attachment.rb
@@ -25,7 +25,7 @@ class Attachment < ApplicationRecord
   validates_length_of :description, maximum: 100
 
   def diskfile
-    File.join(File.join(Rails.root, "files"), disk_directory.to_s, filename.to_s)
+    File.join(File.join(Rails.root, "files"), disk_directory.to_s, disk_filename.to_s)
   end
 
   def title