diff --git a/app/models/metadata_content.rb b/app/models/metadata_content.rb
index 9d3a1040..7598dc31 100644
--- a/app/models/metadata_content.rb
+++ b/app/models/metadata_content.rb
@@ -47,16 +47,13 @@ class MetadataContent < MetadataTemplate
 
     # Eliminar elementos sin src y comprobar su origen
     html.css(elements).each do |element|
-      unless element['src']
-        element.remove
-        next
-      end
-
       begin
+        raise URI::Error unless element['src'].present?
+
         uri = URI element['src']
 
         # No permitimos recursos externos
-        element.remove unless uri.scheme == 'https' && uri.hostname.end_with?(Site.domain)
+        raise URI::Error unless Rails.application.config.hosts.include?(uri.hostname)
       rescue URI::Error
         element.remove
       end