diff --git a/test/clone-object.js b/test/clone-object.js
index 86ec647..1cf7666 100644
--- a/test/clone-object.js
+++ b/test/clone-object.js
@@ -1,6 +1,6 @@
 describe('clone object', function () {
   it('should clone an object', function () {
-    var expected = {name: 'Ahmed', age: 27, skills: ['cycling', 'walking', 'eating']},
+    let expected = {name: 'Ahmed', age: 27, skills: ['cycling', 'walking', 'eating']},
         obj = {};
 
     expect(obj).toEqual(expected);