diff --git a/config/routes.rb b/config/routes.rb
index 90872faa8..71cfb8c55 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -58,6 +58,7 @@ Rails.application.routes.draw do
         post :unfollow
         get :get_user_info
         get :attachment_show
+        get :html_show
         get :get_navigation_info
         post :reply_message
         get :search_user_projects