diff --git a/app/views/tpi/publications/show.html.erb b/app/views/tpi/publications/show.html.erb
index 92fbb2461..c3967a924 100644
--- a/app/views/tpi/publications/show.html.erb
+++ b/app/views/tpi/publications/show.html.erb
@@ -25,7 +25,7 @@
             <%= @publication.summary&.html_safe %>
           </div>
 
-          <%= link_to 'Download file', tpi_publication_download_file_path(slug: @publication.slug), target: '_blank', class: 'button is-primary' %>
+          <%= link_to 'Download file', tpi_publication_download_file_path(slug: @publication.slug, format: format_of(@publication.file)), target: '_blank', class: 'button is-primary' %>
         </div>
       </div>
     </div>