diff --git a/lib/bundle.js b/lib/bundle.js
index 37f44c379..851faf124 100644
--- a/lib/bundle.js
+++ b/lib/bundle.js
@@ -73,6 +73,8 @@ exports.depCache = function(expression) {
 exports.bundle = function(moduleExpression, fileName, opts) {
 
   var systemBuilder = new Builder();
+  
+  opts = opts || {};
 
   return config.load()
   .then(function() {
@@ -139,6 +141,8 @@ function logBuild(outFile, opts) {
 // options.minify, options.sourceMaps
 exports.bundleSFX = function(expression, fileName, opts) {
   var systemBuilder = new Builder();
+  
+  opts = opts || {};
 
   return config.load()
   .then(function() {