diff --git a/app/lib/active_storage/attached/changes/create_one_decorator.rb b/app/lib/active_storage/attached/changes/create_one_decorator.rb
new file mode 100644
index 00000000..bfb92478
--- /dev/null
+++ b/app/lib/active_storage/attached/changes/create_one_decorator.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module ActiveStorage
+  module Attached::Changes::CreateOneDecorator
+    extend ActiveSupport::Concern
+
+    included do
+      private
+
+      # A partir de ahora todos los archivos se suben al servicio de
+      # cada sitio.
+      def attachment_service_name
+        record.name.to_sym
+      end
+    end
+  end
+end
+
+ActiveStorage::Attached::Changes::CreateOne.include ActiveStorage::Attached::Changes::CreateOneDecorator