problem signing package

["Carl B. Constantine" <duckwing@duckwing.ca>]

I just tried a dpkg-buildpackage -rfakeroot for asd4. However, near the
end I get these errors:

dh_builddeb
dpkg-deb: building package `asd4' in `../asd4_0.2-2.2_i386.deb'.
dpkg-deb: building package `asd4-clients' in `../asd4-clients_0.2-2.2_i386.deb'. signfile asd4_0.2-2.2.dsc
gpg: skipped `Carl B. Constantine <duckwing@duckwing.ca>': secret key not available
gpg: [stdin]: clearsign failed: secret key not available

any idas on why I'm getting that error? I have gpg, my secret key should
be available. Just as a test, I just signed another file in my system.
It's working. So what am I doing wrong?

-- 
________________________________________________________________________
    __   _                                           Carl B. Constantine
   / /  (_)__  __ ____  __                          duckwing@duckwing.ca
  / /__/ / _ \/ // /\ \/ /  (2.4.17)              http://www.duckwing.ca 
 /____/_/_//_/\_ _/ /_/\_\  Stormix 2000
                                            PGP key available on request
________________________________________________________________________

  Up the line - out the server- past the firewall - nothing but Net!!