diff --git a/lib/cartodb/models/resource-locator.js b/lib/cartodb/models/resource-locator.js
index efdabce7..6a7b8049 100644
--- a/lib/cartodb/models/resource-locator.js
+++ b/lib/cartodb/models/resource-locator.js
@@ -75,7 +75,7 @@ ResourceLocator.prototype.getUrls = function(username, resourcePath) {
     }
 };
 
-function urlForTemplate(tpl, username, cdnDomain, resource, templated) {
+ResourceLocator.prototype.urlForTemplate = function (tpl, username, cdnDomain, resource, templated) {
     cdnDomain = cdnDomain || {};
     if (templated) {
         return {
@@ -109,10 +109,10 @@ ResourceLocator.prototype.getUrlsFromTemplate = function(username, resource, tem
     var urls = {};
     var cdnDomain = getCdnDomain(this.environment.serverMetadata, resource) || {};
     if (this.resourcesUrlTemplates.http) {
-        urls.http = urlForTemplate(this.resourcesUrlTemplates.http, username, cdnDomain.http, resource, templated);
+        urls.http = this.urlForTemplate(this.resourcesUrlTemplates.http, username, cdnDomain.http, resource, templated);
     }
     if (this.resourcesUrlTemplates.https) {
-        urls.https = urlForTemplate(this.resourcesUrlTemplates.https, username, cdnDomain.https, resource, templated);
+        urls.https = this.urlForTemplate(this.resourcesUrlTemplates.https, username, cdnDomain.https, resource, templated);
     }
 
     return urls;