diff --git a/packages/next-server/lib/router/router.js b/packages/next-server/lib/router/router.js
index 82aa924b..c457d692 100644
--- a/packages/next-server/lib/router/router.js
+++ b/packages/next-server/lib/router/router.js
@@ -39,7 +39,7 @@ export default class Router {
     if (typeof window !== 'undefined') {
       // in order for `e.state` to work on the `onpopstate` event
       // we have to register the initial route upon initialization
-      this.changeState('replaceState', format({ pathname, query }), getURL())
+      this.changeState('replaceState', format({ pathname, query }), as)
 
       window.addEventListener('popstate', this.onPopState)
     }