diff --git a/app/controllers/api/v1/sites_controller.rb b/app/controllers/api/v1/sites_controller.rb
index 2b67864e..58b1464e 100644
--- a/app/controllers/api/v1/sites_controller.rb
+++ b/app/controllers/api/v1/sites_controller.rb
@@ -5,7 +5,7 @@ module Api
     # API para sitios
     class SitesController < BaseController
       SUBDOMAIN = ".#{Site.domain}"
-      TESTING_SUBDOMAIN = ".testing.#{SUBDOMAIN}"
+      TESTING_SUBDOMAIN = ".testing.#{Site.domain}"
       PARTS = Site.domain.split('.').count
 
       if Rails.env.production?