diff --git a/browser/build.js b/browser/build.js
index b427f5a..a43f954 100644
--- a/browser/build.js
+++ b/browser/build.js
@@ -181,7 +181,10 @@ if (require.main === module) {
     testBundle.pipe(fs.createWriteStream('browser/testdata.js'));
   }
   var bitcoreBundle = createBitcore(program);
-  bitcoreBundle.pipe(program.stdout ? process.stdout : fs.createWriteStream('browser/bundle.js'));
+  var pjson = require('../package.json');
+  bitcoreBundle.pipe(
+      program.stdout ? process.stdout :
+      fs.createWriteStream('browser/bitcore-'+pjson.version+'.js'));
 }
 
 module.exports.createBitcore = createBitcore;
diff --git a/browser/testdata.js b/browser/testdata.js
index 6b153ce..5922dfd 100644
--- a/browser/testdata.js
+++ b/browser/testdata.js
@@ -1174,6 +1174,7 @@ var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
     ? Uint8Array
     : Array
 
+	var ZERO   = '0'.charCodeAt(0)
 	var PLUS   = '+'.charCodeAt(0)
 	var SLASH  = '/'.charCodeAt(0)
 	var NUMBER = '0'.charCodeAt(0)
@@ -1282,9 +1283,9 @@ var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
 		return output
 	}
 
-	exports.toByteArray = b64ToByteArray
-	exports.fromByteArray = uint8ToBase64
-}(typeof exports === 'undefined' ? (this.base64js = {}) : exports))
+	module.exports.toByteArray = b64ToByteArray
+	module.exports.fromByteArray = uint8ToBase64
+}())
 
 },{}],4:[function(require,module,exports){
 exports.read = function(buffer, offset, isLE, mLen, nBytes) {