diff --git a/script/buct-cource-helper.js b/script/buct-cource-helper.user.js
similarity index 98%
rename from script/buct-cource-helper.js
rename to script/buct-cource-helper.user.js
index 822aa5c..3e0a78d 100644
--- a/script/buct-cource-helper.js
+++ b/script/buct-cource-helper.user.js
@@ -5,6 +5,7 @@
 // @description  北化在线助手
 // @author       Bluemangoo
 // @match        https://course.buct.edu.cn/meol/jpk/course/layout/newpage/index.jsp?*
+// @match        https://course.buct.edu.cn/meol/jpk/course/layout/lesson/index.jsp?*
 // @icon         https://www.google.com/s2/favicons?sz=64&domain=buct.edu.cn
 // @grant        GM_registerMenuCommand
 // @grant        GM_unregisterMenuCommand
diff --git a/script/ds-listener.js b/script/ds-listener.user.js
similarity index 99%
rename from script/ds-listener.js
rename to script/ds-listener.user.js
index f5e4686..3ef4bd3 100644
--- a/script/ds-listener.js
+++ b/script/ds-listener.user.js
@@ -15,7 +15,7 @@
     const CLASS_MAP = {
         input: "_27c9245",
         send: "_7436101",
-        chat: "dad65929",
+        chat: "ds-virtual-list-visible-items",
         latest: "d7dc56a8",
         done: "_43c05b5"
     };