diff --git a/common.go b/common.go
index 881c8a8..ba56f08 100644
--- a/common.go
+++ b/common.go
@@ -11,6 +11,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net/http"
+	"net/url"
 	"strconv"
 )
 
@@ -164,6 +165,10 @@ type WebDriverCore struct {
 	url string
 }
 
+func (d *WebDriverCore) SetUrl(u *url.URL) {
+	d.url = u.String()
+}
+
 func (w WebDriverCore) Start() error { return nil }
 func (w WebDriverCore) Stop() error  { return nil }