diff --git a/lib/knox-provider.js b/lib/knox-provider.js
index 929e4f7..21863a7 100644
--- a/lib/knox-provider.js
+++ b/lib/knox-provider.js
@@ -29,6 +29,10 @@ function S3Storage(options) {
 }
 util.inherits(S3Storage, attachments.StorageProvider);
 
+S3Storage.prototype.getUrl = function( path ){
+  return this.endpoint + path;
+};
+
 S3Storage.prototype.createOrReplace = function(attachment, cb) {
   var self = this;
   var headers = {};