diff --git a/docs/picture.md b/docs/picture.md
index f21e31ca7..0c9c6f77e 100644
--- a/docs/picture.md
+++ b/docs/picture.md
@@ -10,6 +10,12 @@ pageClass: routes
 
 <Route author="Chingyat" example="/pigtails" path="/pigtails/index"/>
 
+## Bing 壁纸
+
+### 每日壁纸
+
+<Route author="FHYunCai" example="/bing" path="/bing"/>
+
 ## Konachan Anime Wallpapers
 
 ::: tip 提示
@@ -151,9 +157,3 @@ pageClass: routes
 ### 主题
 
 <Route author="xyqfer" example="/dapenti/subject/184" path="/dapenti/subject/:id" :paramsDesc="['主题 id']"/>
-
-## Bing 壁纸
-
-### 每日壁纸
-
-<Route author="FHYunCai" example="/bing" path="/bing"/>
diff --git a/lib/routes/sspai/topic.js b/lib/routes/sspai/topic.js
index 69b2c29c9..9cc33bc2d 100644
--- a/lib/routes/sspai/topic.js
+++ b/lib/routes/sspai/topic.js
@@ -23,7 +23,7 @@ module.exports = async (ctx) => {
             if (cache) {
                 return Promise.resolve(JSON.parse(cache));
             }
-            if (topic_title == '') {
+            if (topic_title === '') {
                 topic_title = item.topics[0].title;
                 topic_link = `https://sspai.com/topic/${id}`;
                 topic_des = item.topics[0].intro;