diff --git a/lib/url.js b/lib/url.js
index db7723895b6..fc8f77d1bdd 100644
--- a/lib/url.js
+++ b/lib/url.js
@@ -40,6 +40,7 @@ function Url() {
   this.query = null;
   this.pathname = null;
   this.path = null;
+  this.href = null;
 }
 
 // Reference: RFC 3986, RFC 1808, RFC 2396