diff --git a/packages/docs/docs/plugin/official/plugin-last-updated.md b/packages/docs/docs/plugin/official/plugin-last-updated.md
index b7bd10b5b4..bcfc0d1eb8 100644
--- a/packages/docs/docs/plugin/official/plugin-last-updated.md
+++ b/packages/docs/docs/plugin/official/plugin-last-updated.md
@@ -71,7 +71,7 @@ module.exports = {
       '@vuepress/last-updated',
       {
         dateOptions:{
-          hours12: false
+          hour12: false
         }
       }
     ]