What do I have wrong? or what miss?

Tell us what’s happening:

Your code so far

function Bird() { }

Bird.prototype.fly = function() { return "I am flying!"; };

function Penguin() { }
Penguin.prototype = Object.create(Bird.prototype);
Penguin.prototype.constructor = Penguin;

// Only change code below this line

Penguin.prototype.fly = function() { 
return "Alas, this is a flightless bird"; 

// Only change code above this line

let penguin = new Penguin();

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36 Edg/86.0.622.69.

Challenge: Override Inherited Methods

Link to the challenge:

you are missing the dot at the end of the string

there is still something wrong

your code passes for me when adding the dot. Have you done other changes?

Now it works, I musst have Upper first letter

good job!

and happy coding