Hi

In the task:

You’ve been asked to create a custom object for tracking projects. The Project custom object records should only be visible to the owner of the record and users above the owner on the role hierarchy. Create the Project custom object and then create an organization-wide default for the Project object to accommodate for this use case.The custom object must be named 'Project' with a resulting API name of 'Project__c'.

I have created the Project object but cant have the API name Project__c. This is beacuse it has two underscore __ and i get the error that this is not possible. But if I try with only one underscore i get:

Challenge not yet complete... here's what's wrong: 
An object with the API name Project__c does not exist

Is this a bug or am I doing someting wrong? Thanks