diff --git a/app/models/shixun.rb b/app/models/shixun.rb
index bbc64946..e7682a74 100644
--- a/app/models/shixun.rb
+++ b/app/models/shixun.rb
@@ -55,7 +55,7 @@ class Shixun < ActiveRecord::Base
   has_many :shixun_service_configs, :dependent => :destroy
 
   scope :visible, lambda{where(status: [2,3])}
-  scope :min, lambda { select([:id, :name, :gpid, :modify_time, :reset_time, :language, :propaedeutics, :status, :identifier,
+  scope :min, lambda { select([:id, :name, :gpid, :modify_time, :reset_time, :language, :status, :identifier,
                                :test_set_permission, :hide_code, :forbid_copy, :hidden, :webssh, :user_id, :code_hidden,
                                :task_pass, :exec_time, :multi_webssh, :vnc]) }
   scope :published, lambda{where(status: 2)}