diff --git a/app/controllers/shixuns_controller.rb b/app/controllers/shixuns_controller.rb
index c237da5e2..e4d18316e 100644
--- a/app/controllers/shixuns_controller.rb
+++ b/app/controllers/shixuns_controller.rb
@@ -129,7 +129,7 @@ class ShixunsController < ApplicationController
 				select m.user_id, u.login, u.lastname, m.updated_at,
 					(select sum(cost_time) from games g where g.myshixun_id = m.id) as time,
 					(select sum(final_score) from games g where g.myshixun_id = m.id) as score
-				from (myshixuns m join users u on m.user_id = u.id) where m.shixun_id = #{@shixun.id} and m.status = 1
+				from (users u left join myshixuns m on m.user_id = u.id) where m.shixun_id = #{@shixun.id} and m.status = 1
 				order by score desc, time asc limit 10
 			"
 			@myshixuns = Myshixun.find_by_sql(sql)