diff --git a/app/controllers/student_works_controller.rb b/app/controllers/student_works_controller.rb
index 63dd509fe..39401d079 100644
--- a/app/controllers/student_works_controller.rb
+++ b/app/controllers/student_works_controller.rb
@@ -494,7 +494,7 @@ class StudentWorksController < ApplicationController
   # 删除实训作品评阅
   def destroy_work_comment
     ActiveRecord::Base.transaction do
-      tip_exception("visible_comment参数有误") if params[:visible_comment].blank?
+      tip_exception("visible_comment参数有误") if params[:visible_comment].nil?
 
       comment = @work.shixun_work_comments.find_by!(id: params[:comment_id])
       params[:visible_comment] ? comment.comment = nil : comment.hidden_comment = nil