diff --git a/lib/phantom-page-render.js b/lib/phantom-page-render.js
index 8de023c..3cbc6d7 100644
--- a/lib/phantom-page-render.js
+++ b/lib/phantom-page-render.js
@@ -11,7 +11,7 @@ page.settings.localToRemoteUrlAccessEnabled = true
 page.settings.resourceTimeout = 15000
 
 page.onInitialized = function () {
-  page.injectJs('../node_modules/core-js/client/core.js')
+  page.injectJs(page.libraryPath + '/../../core-js/client/core.js')
 }
 
 page.onResourceRequested = function (requestData, request) {