diff --git a/lib/ontologies_linked_data/models/group.rb b/lib/ontologies_linked_data/models/group.rb
index 913d9ee3..73ee8fd8 100644
--- a/lib/ontologies_linked_data/models/group.rb
+++ b/lib/ontologies_linked_data/models/group.rb
@@ -8,7 +8,6 @@ class Group < LinkedData::Models::Base
       attribute :created, enforce: [:date_time], :default => lambda { |record| DateTime.now }
       attribute :ontologies, inverse: { on: :ontology, attribute: :group }
 
-      serialize_default :acronym, :name, :description, :created, :ontologies
       cache_timeout 86400
     end
   end