diff --git a/lib/config.js b/lib/config.js
index b690c1ae..2d46b6fb 100644
--- a/lib/config.js
+++ b/lib/config.js
@@ -38,6 +38,12 @@ export const siteConfig = (key, defaultVal = null, extendConfig = {}) => {
     case 'TAG_SORT_BY_COUNT':
     case 'THEME':
     case 'LINK':
+      // LINK比较特殊，
+      if (key === 'LINK') {
+        if (!extendConfig || Object.keys(extendConfig).length === 0) {
+          break
+        }
+      }
       return convertVal(
         getValue(extendConfig[key], getValue(defaultVal, BLOG[key]))
       )
diff --git a/themes/gitbook/components/BottomMenuBar.js b/themes/gitbook/components/BottomMenuBar.js
index c872941b..cfe65c16 100644
--- a/themes/gitbook/components/BottomMenuBar.js
+++ b/themes/gitbook/components/BottomMenuBar.js
@@ -28,7 +28,7 @@ export default function BottomMenuBar({ post, className }) {
           onClick={togglePageNavVisible}
           className='inline-flex flex-col items-center justify-center px-5 border-gray-200 border-x hover:bg-gray-50 dark:hover:bg-gray-800 group dark:border-gray-600'>
           <i className='fa-book fas w-5 h-5 mb-2 text-gray-500 dark:text-gray-400 group-hover:text-gray-600 dark:group-hover:text-gray-500' />
-          <span class='text-sm text-gray-500 dark:text-gray-400 group-hover:text-gray-600 dark:group-hover:text-gray-500'>
+          <span className='text-sm text-gray-500 dark:text-gray-400 group-hover:text-gray-600 dark:group-hover:text-gray-500'>
             {locale.COMMON.ARTICLE_LIST}
           </span>
         </button>