PO file is not "application/x-compressed"

This is the download process of "all in one file" export of a translation. As you can see there is a header set with "application/x-compressed" what is wrong for a ".po" file. Firefox complains here with The file "myproject-5.x-1.0-de.po" cannot opened as archive.


HTTP/1.x 200 OK
Date: Tue, 05 Feb 2008 23:49:19 GMT
Server: Apache/2.0.53 (Linux/SUSE)
Expires: Sun, 19 Nov 1978 05:00:00 GMT
Last-Modified: Tue, 05 Feb 2008 23:49:20 GMT
Cache-Control: store, no-cache, must-revalidate, post-check=0, pre-check=0
content-disposition: attachment; filename=myproject-5.x-1.0-de.po
Keep-Alive: timeout=15, max=100
Connection: Keep-Alive
Transfer-Encoding: chunked
Content-Type: application/x-compressed