diff --git a/config/environments/production.rb b/config/environments/production.rb
index 139e0ba51..3b7b65877 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -92,9 +92,9 @@
   config.active_record.dump_schema_after_migration = false
 
   # Redirect if not in correct domains
-  #config.middleware.use Rack::HostRedirect, {
-  #  %w(coderdojo-japan.herokuapp.com www.coderdojo.jp) => 'coderdojo.jp'
-  #}
+  config.middleware.use Rack::HostRedirect, {
+    %w(coderdojo-japan.herokuapp.com www.coderdojo.jp) => 'coderdojo.jp'
+  }
 
   # Mailer settings
   config.action_mailer.delivery_method       = :smtp