diff --git a/app/serializers/api/payment_serializer.rb b/app/serializers/api/payment_serializer.rb
index 029143403f..019e140ff3 100644
--- a/app/serializers/api/payment_serializer.rb
+++ b/app/serializers/api/payment_serializer.rb
@@ -1,5 +1,5 @@
 class Api::PaymentSerializer < ActiveModel::Serializer
-  attributes :identifier, :amount, :updated_at, :payment_method
+  attributes :amount, :updated_at, :payment_method
   def payment_method
     object.payment_method.name
   end