diff --git a/app/controllers/repp/v1/contacts_controller.rb b/app/controllers/repp/v1/contacts_controller.rb
index 309a53a36..d6c4439c5 100644
--- a/app/controllers/repp/v1/contacts_controller.rb
+++ b/app/controllers/repp/v1/contacts_controller.rb
@@ -155,7 +155,7 @@ module Repp
       end
 
       def serialized_contacts(contacts)
-        return contacts.map(&code) unless index_params[:details] == 'true'
+        return contacts.map(&:code) unless index_params[:details] == 'true'
 
         address_processing = Contact.address_processing?
         contacts.map do |c|