diff --git a/app/controllers/cmtool/application_controller.rb b/app/controllers/cmtool/application_controller.rb
index 223891a..f8f8863 100644
--- a/app/controllers/cmtool/application_controller.rb
+++ b/app/controllers/cmtool/application_controller.rb
@@ -10,7 +10,7 @@ module Cmtool
       if respond_to? :cmtool_locale
         I18n.locale = cmtool_locale
       else
-        I18n.locale = :en
+        I18n.locale = Rails.configuration.i18n.default_locale
       end
     end