diff --git a/src/crafty-headless.js b/src/crafty-headless.js
index cd69eb51..e23c4223 100644
--- a/src/crafty-headless.js
+++ b/src/crafty-headless.js
@@ -5,7 +5,7 @@ function requireNew (id) {
 
 module.exports = function() {
     // Define common features
-    var Crafty = require('./crafty-common.js')(requireNew);
+    let Crafty = require('./crafty-common.js')(requireNew);
 
     // Define some aliases for renamed properties
     requireNew('./aliases').defineAliases(Crafty);