diff --git a/lib/v2/bnu/dwxgb.js b/lib/v2/bnu/dwxgb.js
index e6610138e..66d4dd162 100644
--- a/lib/v2/bnu/dwxgb.js
+++ b/lib/v2/bnu/dwxgb.js
@@ -6,7 +6,7 @@ module.exports = async (ctx) => {
     const { category, type } = ctx.params;
 
     const rootUrl = 'https://dwxgb.bnu.edu.cn';
-    let currentUrl = `${rootUrl}/${category}/${type}/index.html`;
+    const currentUrl = `${rootUrl}/${category}/${type}/index.html`;
 
     let response;
     try {
@@ -22,16 +22,16 @@ module.exports = async (ctx) => {
     const $ = cheerio.load(response.data);
 
     const list = $('ul.container.list > li')
-    .map((_, item) => {
-        const link = $(item).find('a').attr('href');
-        const absoluteLink = new URL(link, currentUrl).href;
-        return {
-            title: $(item).find('a').text().trim(),
-            pubDate: parseDate($(item).find('span').text()),
-            link: absoluteLink,
-        };
-    })
-    .get();
+        .map((_, item) => {
+            const link = $(item).find('a').attr('href');
+            const absoluteLink = new URL(link, currentUrl).href;
+            return {
+                title: $(item).find('a').text().trim(),
+                pubDate: parseDate($(item).find('span').text()),
+                link: absoluteLink,
+            };
+        })
+        .get();
 
     const items = await Promise.all(
         list.map((item) =>