diff --git a/guide/english/javascript/typeof/index.md b/guide/english/javascript/typeof/index.md
index 2e2af4b6b8..8a192e0669 100644
--- a/guide/english/javascript/typeof/index.md
+++ b/guide/english/javascript/typeof/index.md
@@ -83,11 +83,15 @@ Even thought this is a useful validation method, we have to be careful because j
 ```javascript
 var x = [1,2,3,4]; 
 console.log(typeof x)  // object
-
 console.log(typeof null)  // object
-
 ```
 
+The last example above is a well-known JavaScript 'mistake' and a fix was proposed in ECMAScript, which would have resulted in: 
+```javascript
+typeof null === 'null' // true
+```
+But due to major legacy issues it had to be rejected.
+
 
 ### More Information:
 <a href='https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof' target='_blank' rel='nofollow'>MDN Documentation for typeof</a>