diff --git a/app/models/challenge.rb b/app/models/challenge.rb
index 68d55a582..19a3bf1bb 100644
--- a/app/models/challenge.rb
+++ b/app/models/challenge.rb
@@ -79,7 +79,7 @@ class Challenge < ApplicationRecord
   #   end
   # end
 
-  def open_game user_id, shixun
+  def open_game shixun, user_id
     game = self.games.where(user_id: user_id).first
     if game.present?
       shixun.task_pass || game.status != 3 ? "/tasks/#{game.identifier}" : ""