diff --git a/examples/helloworld/hello.js b/examples/helloworld/hello.js
index 484597920..df26035f3 100644
--- a/examples/helloworld/hello.js
+++ b/examples/helloworld/hello.js
@@ -3,11 +3,12 @@
 // In production, the bundled pdf.js shall be used instead of SystemJS.
 Promise.all([System.import('pdfjs/display/api'),
              System.import('pdfjs/display/global'),
+             System.import('pdfjs/display/network'),
              System.resolve('pdfjs/worker_loader')])
        .then(function (modules) {
   var api = modules[0], global = modules[1];
   // In production, change this to point to the built `pdf.worker.js` file.
-  global.PDFJS.workerSrc = modules[2];
+  global.PDFJS.workerSrc = modules[3];
 
   // Fetch the PDF document from the URL using promises.
   api.getDocument('helloworld.pdf').then(function (pdf) {