diff --git a/app/helpers/homework_commons_helper.rb b/app/helpers/homework_commons_helper.rb
index 2d3827fac..261fc85e9 100644
--- a/app/helpers/homework_commons_helper.rb
+++ b/app/helpers/homework_commons_helper.rb
@@ -176,7 +176,7 @@ module HomeworkCommonsHelper
   # 作品数统计：type： 1 已提交  0 未提交
   def studentwork_count homework_common, type, member
     student_works = homework_common.teacher_works(member)
-    type == 1 ? student_works.select{|work| work.work_status != 0}.size : student_works.select{|work| work.work_status = 0}.size
+    type == 1 ? student_works.where("work_status != 0").size : student_works.where(work_status: 0).size
   end
 
   # 上次查重的时间