diff --git a/app/views/api/speakers/index.jbuilder b/app/views/api/speakers/index.jbuilder
index f547474..e6e07b5 100644
--- a/app/views/api/speakers/index.jbuilder
+++ b/app/views/api/speakers/index.jbuilder
@@ -1,5 +1,5 @@
 @speakers.each do |speaker|
-  json.set! speaker.id do
+  json.set! speaker.user_id do
     json.extract! speaker, :twitter, :github, :biography, :public_email, :organisation, :last_name, :first_name
     json.picture speaker.picture.serializable_hash
   end