diff --git a/browser/build.js b/browser/build.js
index eaf385c..a747d31 100644
--- a/browser/build.js
+++ b/browser/build.js
@@ -24,6 +24,7 @@ var modules = [
   'lib/ECIES',
   'lib/Electrum',
   'lib/Message',
+  'lib/NetworkMonitor',
   'lib/Opcode',
   'lib/PayPro',
   'lib/Peer',
@@ -101,6 +102,9 @@ var createBitcore = function(opts) {
   b.require(opts.dir + 'bufferput', {
     expose: 'bufferput'
   });
+  b.require(opts.dir + 'events', {
+    expose: 'events'
+  });
   b.require(opts.dir + 'buffers', {
     expose: 'buffers'
   });
diff --git a/lib/Connection.js b/lib/Connection.js
index 5a6e5d5..9531032 100644
--- a/lib/Connection.js
+++ b/lib/Connection.js
@@ -18,6 +18,7 @@ var doubleSha256 = util.twoSha256;
 var SecureRandom = require('./SecureRandom');
 var nonce = SecureRandom.getPseudoRandomBuffer(8);
 var nodeUtil = require('util');
+var EventEmitter = require('events').EventEmitter;
 
 var BIP0031_VERSION = 60000;
 
@@ -59,7 +60,6 @@ function Connection(socket, peer, opts) {
 
   this.setupHandlers();
 }
-var EventEmitter = require('events').EventEmitter;
 nodeUtil.inherits(Connection, EventEmitter);
 Connection.prototype.open = function(callback) {
   if (typeof callback === 'function') this.once('connect', callback);
diff --git a/test/index.html b/test/index.html
index db755ff..b1d5ad0 100644
--- a/test/index.html
+++ b/test/index.html
@@ -10,6 +10,7 @@
     <div id="mocha"></div>
     <script src="../node_modules/mocha/mocha.js"></script>
     <script src="../node_modules/chai/chai.js"></script>
+    <script src="../node_modules/sinon/pkg/sinon.js"></script>
     <script>mocha.setup('bdd')</script>
     <script src="../browser/bundle.js"></script>
     <script src="../browser/testdata.js"></script>
@@ -31,6 +32,7 @@
     <script src="test.main.js"></script>
     <script src="test.Message.js"></script>
     <script src="test.misc.js"></script>
+    <script src="test.NetworkMonitor.js"></script>
     <script src="test.Opcode.js"></script>
     <script src="test.PayPro.js"></script>
     <script src="test.Peer.js"></script>
diff --git a/test/test.NetworkMonitor.js b/test/test.NetworkMonitor.js
index 2b3198f..b26fc72 100644
--- a/test/test.NetworkMonitor.js
+++ b/test/test.NetworkMonitor.js
@@ -1,7 +1,7 @@
 'use strict';
 
 var chai = chai || require('chai');
-var sinon = require('sinon');
+var sinon = sinon || require('sinon');
 var bitcore = bitcore || require('../bitcore');
 var Transaction = bitcore.Transaction;
 var NetworkMonitor = bitcore.NetworkMonitor;
@@ -36,6 +36,7 @@ describe('NetworkMonitor', function() {
   it('should be able to start instance', function() {
     var nm = new NetworkMonitor.create(config);
     nm.start.bind(nm).should.not.throw();
+    nm.stop();
   });
   it('should be able to stop instance', function() {
     var nm = new NetworkMonitor.create(config);