diff --git a/app/models/laboratory.rb b/app/models/laboratory.rb
index ce5a56c0d..2ba86ed90 100644
--- a/app/models/laboratory.rb
+++ b/app/models/laboratory.rb
@@ -50,7 +50,7 @@ class Laboratory < ApplicationRecord
     if main_site?
       not_shixun_ids = Shixun.joins(:laboratory_shixuns).where("laboratory_shixuns.laboratory_id != #{Laboratory.current.id}")
       Shixun.where.not(id: not_shixun_ids.pluck(:shixun_id))
-    elsif sync_subject
+    elsif sync_shixun
       laboratory_shixun_ids = laboratory_shixuns.pluck(:shixun_id)
       school_shixun_ids = Shixun.joins("join user_extensions on shixuns.user_id=user_extensions.user_id").where(user_extensions: { school_id: school_id }).pluck(:id)
       shixun_ids = laboratory_shixun_ids + school_shixun_ids