Yep, you're right - [Wikipedia writes](https://en.wikipedia.org/wiki/HTTP_location):

> While the soon-to-be obsolete[2] IETF standard RFC 2616 (HTTP 1.1) requires a complete absolute URI for redirection,[3] the most popular web browsers tolerate the passing of a relative URL as the value for a Location header field.[4] Consequently, the current revision of HTTP/1.1 makes relative URLs conforming.[5]