diff --git a/app/views/my_modules/protocols/_protocol_description_form.html.erb b/app/views/my_modules/protocols/_protocol_description_form.html.erb
index 1950cabc2..0b14ab6d6 100644
--- a/app/views/my_modules/protocols/_protocol_description_form.html.erb
+++ b/app/views/my_modules/protocols/_protocol_description_form.html.erb
@@ -22,5 +22,5 @@
                         data: {
                           object_type: 'protocol',
                           object_id: protocol.id,
-                          highlightjs_path: asset_path('highlightjs-github-theme') } ) %>
+                          highlightjs_path: asset_path('highlightjs-github-theme.css') } ) %>
 <% end %>