diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 1d6119d..d89a3b6 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -778,7 +778,7 @@ module ApplicationHelper
     (field_helpers - %w(hidden_field)).each do |selector|
       src = <<-END_SRC
         def #{selector}(field, *args, &proc)
-          text = object.class.human_attribute_name(field.to_s)
+          text = object.class.respond_to?(:human_attribute_name) && object.class.human_attribute_name(field.to_s) || field.to_s.humanize
           NoosferoFormBuilder::output_field(text, super)
         end
       END_SRC
--
libgit2 0.21.2