diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 20a8e57..493f470 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -107,8 +107,9 @@ class ApplicationController < ActionController::Base
       lang = find_language(User.current.language)
     end
     if lang.nil? && request.env['HTTP_ACCEPT_LANGUAGE']
-      accept_lang = parse_qvalues(request.env['HTTP_ACCEPT_LANGUAGE']).first.downcase
+      accept_lang = parse_qvalues(request.env['HTTP_ACCEPT_LANGUAGE']).first
       if !accept_lang.blank?
+        accept_lang = accept_lang.downcase
         lang = find_language(accept_lang) || find_language(accept_lang.split('-').first)
       end
     end