diff --git a/packages/@vuepress/theme-default/util/index.js b/packages/@vuepress/theme-default/util/index.js
index fbf641635b..54b9e77a53 100644
--- a/packages/@vuepress/theme-default/util/index.js
+++ b/packages/@vuepress/theme-default/util/index.js
@@ -43,7 +43,7 @@ export function ensureExt (path) {
 }
 
 export function isActive (route, path) {
-  const routeHash = route.hash
+  const routeHash = decodeURIComponent(route.hash)
   const linkHash = getHash(path)
   if (linkHash && routeHash !== linkHash) {
     return false