X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/d0b845fc6025f2fb84a4cf4fa10cbb71084843a7..9126d989c8bccf645846fe51c4d414a44fd0972c:/app/controllers/application.rb

diff --git a/app/controllers/application.rb b/app/controllers/application.rb
index c5624db14..6ead2d668 100644
--- a/app/controllers/application.rb
+++ b/app/controllers/application.rb
@@ -112,6 +112,8 @@ class ApplicationController < ActionController::Base
     end
 
     I18n.locale = request.compatible_language_from(I18n.available_locales)
+
+    response.headers['Content-Language'] = I18n.locale
   end
 
   def api_call_handle_error