diff --git a/config/application.rb b/config/application.rb
index e18447fa4..58d949a48 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -33,6 +33,8 @@ module RedmineApp
     # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
     # config.i18n.default_locale = :de
 
+    I18n.enforce_available_locales = false
+
     # Configure the default encoding used in templates for Ruby 1.9.
     config.encoding = "utf-8"