diff --git a/app/models/module_app.rb b/app/models/module_app.rb
index 006b8404..8218731b 100644
--- a/app/models/module_app.rb
+++ b/app/models/module_app.rb
@@ -196,6 +196,7 @@ class ModuleApp
 
   def update_auth_sub_manager_users
     user_ids = self.auth_sub_managers.inject([]) do |users, auth|
+      auth = auth.class.find(auth.id)
       users += auth.authorized_users.map{|user| user.id}
     end
     self.update_attribute(:auth_sub_manager_users, user_ids.uniq)