diff --git a/lib/tabular_form_builder.rb b/lib/tabular_form_builder.rb
index 8728266..e13240d 100644
--- a/lib/tabular_form_builder.rb
+++ b/lib/tabular_form_builder.rb
@@ -25,7 +25,7 @@ class TabularFormBuilder < ActionView::Helpers::FormBuilder
     super
   end      
       
-  (field_helpers - %w(radio_button hidden_field) + %w(date_select)).each do |selector|
+  (field_helpers.map { |name| name.to_s } - %w(radio_button hidden_field) + %w(date_select)).each do |selector|
     src = <<-END_SRC
     def #{selector}(field, options = {}) 
       label_for_field(field, options) + super