Prevent Sharepoint from altering Quick Launch URLs

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SharePoint2013

quicklaunch

When adding a link in the quick launch bar of a site collection to a sub site SharePoint alters the link url and duplicates the query string parameters.

The top site is http://localhost/ and when I add a link to a sub site blog category http://localhost/blog/Lists/Categories/Category.aspx?CategoryId=7&Name=Clipping Sharepoint changes the url instead to point to /blog/Lists/Categories/Category.aspx?CategoryId=9&Name=Eventos?CategoryId=9&Name=Eventos which messes up the link.

(Note this is Sharepoint 2013)

How can I prevent this?