diff --git a/lib/broccoli/angular2-app.js b/lib/broccoli/angular2-app.js
index cd9a5a172fe2..d3eac5805d51 100644
--- a/lib/broccoli/angular2-app.js
+++ b/lib/broccoli/angular2-app.js
@@ -30,7 +30,7 @@ Angular2App.prototype.toTree = function() {
       'angular2/bundles/upgrade.dev.js'
     ];
 
-    if (this.options.vendorNpmFiles) {
+    if (this.options && this.options.vendorNpmFiles) {
       vendorNpmFiles = vendorNpmFiles.concat(this.options.vendorNpmFiles);
     }