diff --git a/js/ditto.js b/js/ditto.js
index b78cf4c..4960312 100644
--- a/js/ditto.js
+++ b/js/ditto.js
@@ -225,7 +225,7 @@ function create_banner(element) {
     'color: #333333'
   ].join(';');
 
-  var text = '【课程】' +
+  var text = '【免费课程】' +
     '开始学习<span style="color: #4682BE;">《ES6 实战教程》</span>，一线大厂前端必备技能。';
 
   var banner = $('<a href="https://datayi.cn/w/1P6jEmmP" style="color: #333333;" target="_blank"><div style="' + styleStr + '">' + text + '</div></a>')