diff --git a/app/repositories/orient_db/subject_repository.rb b/app/repositories/orient_db/subject_repository.rb
index b90fa2b919efcb4a884cb3ea1a2c9744decef128..6bc3f7147c2b06155971e59c8b457e43f7bdad45 100644
--- a/app/repositories/orient_db/subject_repository.rb
+++ b/app/repositories/orient_db/subject_repository.rb
@@ -27,8 +27,8 @@ module OrientDb
       learning_object_repository.build_objects(result)
     end
 
-    def build_hash
-      hash = super
+    def build_hash(object)
+      hash = super(object)
       hash.delete("learning_objects")
       hash
     end