diff --git a/src/network.js b/src/network.js
index d6b097b..866514a 100644
--- a/src/network.js
+++ b/src/network.js
@@ -46,10 +46,10 @@ function nodeDownload(uri, callback) {
   });
 }
 
-module.exports = function(uri, callback) {
+module.exports.download = (function() {
   if (typeof XMLHttpRequest === 'undefined') {
-    nodeDownload(uri, callback);
+    return nodeDownload;
   } else {
-    browserDownload(uri, callback);
+    return browserDownload;
   }
-};
+}());
diff --git a/tests/spec/filer.spec.js b/tests/spec/filer.spec.js
index d72a442..82ec707 100644
--- a/tests/spec/filer.spec.js
+++ b/tests/spec/filer.spec.js
@@ -1,5 +1,5 @@
 var Filer = require('../..');
-var expect = require('chai');
+var expect = require('chai').expect;
 
 describe("Filer", function() {
   it("is defined", function() {