diff --git a/server.js b/server.js
index 9358357..90e0f81 100644
--- a/server.js
+++ b/server.js
@@ -17,6 +17,6 @@ app.get('/', function(request, response) {
 });
 
 // listen for requests :)
-var listener = app.listen(process.env.PORT, function() {
+const listener = app.listen(process.env.PORT, function() {
   console.log('Your app is listening on port ' + listener.address().port);
 });