diff --git a/config/routes.rb b/config/routes.rb
index 57863a06..9d146199 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,8 +1,6 @@
 Osem::Application.routes.draw do
   mount LetterOpenerWeb::Engine, at: '/letter_opener' if Rails.env.development?
 
-  mount LetterOpenerWeb::Engine, at: '/letter_opener' if Rails.env.development?
-
   if ENV['OSEM_ICHAIN_ENABLED'] == 'true'
     devise_for :users, controllers: { registrations: :registrations }
   else