diff --git a/app/serializers/doi_serializer.rb b/app/serializers/doi_serializer.rb
index cf7bafa98..aae42e277 100644
--- a/app/serializers/doi_serializer.rb
+++ b/app/serializers/doi_serializer.rb
@@ -11,7 +11,7 @@ class DoiSerializer
   has_many :media
 
   attribute :xml, if: Proc.new { |object, params| params && params[:detail] } do |object|
-    object.xml_encoded || (object.current_metadata.present? && object.current_metadata.xml.to_s.start_with?('<?xml version=') ? Base64.strict_encode64(object.current_metadata.xml.force_encoding("UTF-8")) : nil)
+    object.xml_encoded || object.current_metadata.present? ? object.from_xml(object.current_metadata.xml.to_s.force_encoding("UTF-8")) : nil
   end
 
   attribute :doi do |object|