diff --git a/app.js b/app.js
index 69a14b69..b05e3b8b 100644
--- a/app.js
+++ b/app.js
@@ -1,11 +1,11 @@
-var express       = require('express');
-var path          = require('path');
-var favicon       = require('serve-favicon');
-var logger        = require('morgan');
-var cookieParser  = require('cookie-parser');
-var bodyParser    = require('body-parser');
+const express = require('express');
+const path = require('path');
+const favicon = require('serve-favicon');
+const logger = require('morgan');
+const cookieParser = require('cookie-parser');
+const bodyParser = require('body-parser');
 
-var mongodb       = require('./db');
+var mongodb = require('./db');
 
 var routes = require('./routes/routes');
 
@@ -18,14 +18,16 @@ app.set('view engine', 'pug');
 app.use(favicon(path.join(__dirname, 'public', 'img', 'favicon.ico')));
 app.use(logger('dev'));
 app.use(bodyParser.json());
-app.use(bodyParser.urlencoded({ extended: false }));
+app.use(bodyParser.urlencoded({
+  extended: false
+}));
 app.use(cookieParser());
 app.use(express.static(path.join(__dirname, 'public')));
 
 app.use('/', routes);
 
 // catch 404 and forward to error handler
-app.use(function(req, res, next) {
+app.use(function (req, res, next) {
   var err = new Error('Not Found');
   err.status = 404;
   next(err);
@@ -36,7 +38,7 @@ app.use(function(req, res, next) {
 // development error handler
 // will print stacktrace
 if (app.get('env') === 'development') {
-  app.use(function(err, req, res, next) {
+  app.use(function (err, req, res, next) {
     res.status(err.status || 500);
     res.render('error', {
       message: err.message,
@@ -48,7 +50,7 @@ if (app.get('env') === 'development') {
 
 // production error handler
 // no stacktraces leaked to user
-app.use(function(err, req, res, next) {
+app.use(function (err, req, res, next) {
   res.status(err.status || 500);
   res.render('error', {
     message: err.message,
@@ -58,4 +60,4 @@ app.use(function(err, req, res, next) {
 
 mongodb.connectDB();
 
-module.exports = app;
+module.exports = app;
\ No newline at end of file