Plist empty

[Leonardo B. Cuquejo (Arachnius)]

I've created a port to DB3.3, and it installed correctly, I ran the make 
install command and:
#pkg_info | grep db-3
db-3.3.11 Berkeley DB

But when I run make plist I have this problem:
#make plist
===> Updating plist for db-3.3.11
/usr/ports/databases/db3.3/pkg/PLIST empty
#cat /usr/ports/databases/db3.3/pkg/PLIST
@comment $OpenBSD$

That doesn't work, where is my mistake?

OBS: Sorry about the english  :D