Premature end of script headers error with CGI

[obsd, cgi]

http://unix.stackexchange.com/questions/88062/how-to-enable-cgi-in-openbsd

How could someone use a CGI (with a shell script) on OpenBSD? What could
the problem be?

The CGI is this:

# cat /var/www/htdocs/cgi-bin/SEARCH.cgi
printf "Content-type: text/html\n\n";
printf hi

but it keeps saying:


# cat /var/www/logs/error_log
[Mon Aug 26 10:09:13 2013] [error] [client 10.0.2.2] Premature end of
script headers: /htdocs/cgi-bin/SEARCH.cgi
#


yes, I tried many things..(permissions looks good, printf binary copied to
chroot, httpd.conf looks ok..) several hours of pain.. can someone post a
howto/URL?

Thanks, have a better day :)