diff --git a/app/models/challenge.rb b/app/models/challenge.rb
index 44cd8574c..38aa2812a 100644
--- a/app/models/challenge.rb
+++ b/app/models/challenge.rb
@@ -69,13 +69,13 @@ class Challenge < ApplicationRecord
   end
 
   # 开启挑战
-  def open_game shixun, position
+  def open_game shixun
     # 这里的identifier,status是关联了games取了games的identifier,status
     identifier = self.identifier
     if identifier.present?
       shixun.task_pass || self.status != 3 ? "/tasks/#{identifier}" : ""
     else
-      position == 1 ? "/shixuns/#{shixun.identifier}/shixun_exec.json" : ""
+      self.position == 1 ? "/shixuns/#{shixun.identifier}/shixun_exec.json" : ""
     end
   end