Fix for issue#533
diff --git a/openstack/blockstorage/v1/apiversions/urls.go b/openstack/blockstorage/v1/apiversions/urls.go
index 56f8260..78f9645 100644
--- a/openstack/blockstorage/v1/apiversions/urls.go
+++ b/openstack/blockstorage/v1/apiversions/urls.go
@@ -2,6 +2,7 @@
 
 import (
 	"strings"
+	"net/url"
 
 	"github.com/rackspace/gophercloud"
 )
@@ -11,5 +12,7 @@
 }
 
 func listURL(c *gophercloud.ServiceClient) string {
-	return c.ServiceURL("")
+	u, _ := url.Parse(c.ServiceURL(""))
+	u.Path = "/"
+	return u.String()
 }