diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 0615a8199..713cbade4 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -3,6 +3,7 @@
 require 'logger'
 
 require File.expand_path('../../lib/acts-as-taggable-on', __FILE__)
+I18n.enforce_available_locales = true
 require 'ammeter/init'
 
 unless [].respond_to?(:freq)