diff --git a/app/models/site/forms.rb b/app/models/site/forms.rb
index 9321dd6..29e54aa 100644
--- a/app/models/site/forms.rb
+++ b/app/models/site/forms.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 class Site
+  # Gestor de formularios del sitio
   module Forms
     # Esta clase es un Hash que es capaz de convertirse a strong params
     # según la definición del formulario en el sitio.
@@ -21,12 +22,12 @@ class Site
       end
 
       def t(field)
-        self[field.to_s]['label'][I18n.locale.to_s]
+        dig(field.to_s, 'label', I18n.locale.to_s)
       end
     end
 
     # Campos del formulario que no son necesarios
-    EXCLUDED_FIELDS = %w[separator].freeze
+    EXCLUDED_FIELDS = %w[separator redirect].freeze
     # Campos que aceptan valores múltiples (checkboxes, input-map,
     # input-tag)
     ARRAY_FIELDS = %w[array].freeze
diff --git a/app/views/contact_mailer/notify_usuaries.html.haml b/app/views/contact_mailer/notify_usuaries.html.haml
index 792660b..bc3d5ef 100644
--- a/app/views/contact_mailer/notify_usuaries.html.haml
+++ b/app/views/contact_mailer/notify_usuaries.html.haml
@@ -1,4 +1,4 @@
 - @params[:form].each do |field, value|
   %p
-    %strong= @params[:form_definition].t(field) + ':'
+    %strong= @params[:form_definition].t(field) || field + ':'
     = value
diff --git a/app/views/contact_mailer/notify_usuaries.text.haml b/app/views/contact_mailer/notify_usuaries.text.haml
index 1c440de..434a8d7 100644
--- a/app/views/contact_mailer/notify_usuaries.text.haml
+++ b/app/views/contact_mailer/notify_usuaries.text.haml
@@ -1,3 +1,3 @@
 - @params[:form].each do |field, value|
-  = "#{@params[:form_definition].t(field)}: #{value}"
+  "#{@params[:form_definition].t(field) || field}: #{value}"
   \