I installed WordPress in the subdiretory `/de` and activated multisite features. The main blog has the URL/path: `mysite.de/de`

Now I want to add a second site for the English language with the following url: `mysite.de/en`

But after I added the site, the subdirectory for the English site was set as: 
`mysite.de/de/en`

Any ideas how I can get these site urls?

    mysite.de/de
    mysite.de/en
    mysite.de/fr