diff --git a/index.js b/index.js
index 12ff0e4..4b48559 100644
--- a/index.js
+++ b/index.js
@@ -6,17 +6,17 @@ var crypto = require('crypto')
 
 module.exports = BIP39
 
-function BIP39(language){
+function BIP39(language) {
   language = language || 'en'
   this.wordlist = JSON.parse(Wordlists[language])
 }
 
-BIP39.prototype.mnemonicToSeed = function(mnemonic, password){
+BIP39.prototype.mnemonicToSeed = function(mnemonic, password) {
   var options = {iterations: 2048, hasher: CryptoJS.algo.SHA512, keySize: 512/32}
   return CryptoJS.PBKDF2(mnemonic, salt(password), options).toString(CryptoJS.enc.Hex)
 }
 
-BIP39.prototype.entropyToMnemonic = function(entropy){
+BIP39.prototype.entropyToMnemonic = function(entropy) {
   var entropyBuffer = new Buffer(entropy, 'hex')
   var hash = crypto.createHash('sha256').update(entropyBuffer).digest()
 
@@ -25,31 +25,31 @@ BIP39.prototype.entropyToMnemonic = function(entropy){
   var bits = bytesToBinary([].slice.call(combined)).substr(0, bitLength)
 
   var chunks = (bits).match(/(.{1,11})/g)
-  return chunks.map(function(binary){
+  return chunks.map(function(binary) {
     var index = parseInt(binary, 2)
     return this.wordlist[index]
   }, this).join(' ')
 }
 
-BIP39.prototype.generateMnemonic = function(strength){
+BIP39.prototype.generateMnemonic = function(strength) {
   strength = strength || 128
   var entropy = crypto.randomBytes(strength/8).toString('hex')
   return this.entropyToMnemonic(entropy)
 }
 
-BIP39.prototype.validate = function(mnemonic){
+BIP39.prototype.validate = function(mnemonic) {
   mnemonic = mnemonic.split(' ')
 
-  if(mnemonic.length % 3 !== 0) return false
+  if (mnemonic.length % 3 !== 0) return false
 
   var wordlist = this.wordlist
-  var belongToList = mnemonic.reduce(function(memo, m){
+  var belongToList = mnemonic.reduce(function(memo, m) {
     return memo && (wordlist.indexOf(m) > -1)
   }, true)
 
-  if(!belongToList) return false
+  if (!belongToList) return false
 
-  var bits = mnemonic.map(function(m){
+  var bits = mnemonic.map(function(m) {
     var id = wordlist.indexOf(m)
     return lpad(id.toString(2), '0', 11)
   }).join('')
@@ -59,7 +59,7 @@ BIP39.prototype.validate = function(mnemonic){
   var checksum = bits.substring(dividerIndex)
 
   var data = bits.substring(0, dividerIndex)
-  var bytes = data.match(/(.{1,8})/g).map(function(bin){
+  var bytes = data.match(/(.{1,8})/g).map(function(bin) {
     return parseInt(bin, 2)
   })
   var hash = crypto.createHash('sha256').update(new Buffer(bytes)).digest()
@@ -73,7 +73,7 @@ function salt(password) {
   return encode_utf8('mnemonic' + (password || ''))
 }
 
-function encode_utf8(s){
+function encode_utf8(s) {
   return unescape(encodeURIComponent(s))
 }