diff --git a/app/controllers/subjects_controller.rb b/app/controllers/subjects_controller.rb
index 38410eae0..df92d11d8 100644
--- a/app/controllers/subjects_controller.rb
+++ b/app/controllers/subjects_controller.rb
@@ -243,7 +243,7 @@ class SubjectsController < ApplicationController
     @courses = @courses.where(id: current_laboratory.all_courses)
 
     @none_shixun_ids = @subject.shixuns.joins(:shixun_schools)
-                           .where("school_id != #{current_user.user_extension.try(:school_id).to_i}").pluck("shixuns.shixun_id")
+                           .where("school_id != #{current_user.user_extension.try(:school_id).to_i}").pluck("shixun_schools.shixun_id")
     logger.info("########:#{current_user.user_extension.try(:school_id)}")
     logger.info("########:#{@subject.shixuns.joins(:shixun_schools).pluck("shixun_schools.school_id")}")
     logger.info("########:#{@none_shixun_ids}")