diff --git a/app/controllers/challenges_controller.rb b/app/controllers/challenges_controller.rb
index 7a5675b4f..0008e470d 100644
--- a/app/controllers/challenges_controller.rb
+++ b/app/controllers/challenges_controller.rb
@@ -200,7 +200,7 @@ class ChallengesController < ApplicationController
           test_set.delete_all unless test_set.blank?
           params[:test_set].each_with_index do |set, index|
             # last： 末尾匹配， full: 全完匹配
-            match_rule = params[:match_rule] == 'last' ? 'last' : 'full'
+            match_rule = set[:match_rule] == 'last' ? 'last' : 'full'
             TestSet.create(:challenge_id => @challenge.id,
                            :input => "#{set[:input]}",
                            :output => "#{set[:output]}",