diff --git a/layout/_partial/sidebar/widgets/toc.ejs b/layout/_partial/sidebar/widgets/toc.ejs
index 0877528..3fd1f7a 100644
--- a/layout/_partial/sidebar/widgets/toc.ejs
+++ b/layout/_partial/sidebar/widgets/toc.ejs
@@ -30,7 +30,7 @@ function layoutDocTree(pages) {
     el += '<div class="doc-tree' + isActive + '">';
     if (proj.pages.length > 1) {
       let href = url_for(p.path);
-      if (i == 0) {
+      if (p.is_homepage) {
         href += '#start'
       }
       el += '<a class="doc-tree-link' + isActive + '" href="' + href + '">';
diff --git a/scripts/events/lib/doc_tree.js b/scripts/events/lib/doc_tree.js
index e98d955..18830dd 100644
--- a/scripts/events/lib/doc_tree.js
+++ b/scripts/events/lib/doc_tree.js
@@ -95,6 +95,7 @@ module.exports = ctx => {
       continue
     }
     proj.homepage = proj_pages[0]
+    proj.homepage.is_homepage = true
     // 内页按 section 分组
     var section_configs = []
     if (proj.sections) {