diff --git a/theme/src/node/plugins/resolveBlogDataOptions.ts b/theme/src/node/plugins/resolveBlogDataOptions.ts
index 3c7836f3..3c9abd7a 100644
--- a/theme/src/node/plugins/resolveBlogDataOptions.ts
+++ b/theme/src/node/plugins/resolveBlogDataOptions.ts
@@ -23,7 +23,7 @@ export function resolveBlogDataOptions(
       '**/{README,readme,index}.md',
       '.vuepress/',
       'node_modules/',
-      ...(blog?.exclude ?? []),
+      ...(blog.exclude ?? []),
       ...notesDirList,
     ].filter(Boolean),
     sortBy: 'createTime',