ssh 6.6.1, PubkeyAcceptedKeyTypes

[Mauricio Tavares]

      So I add the line

PubkeyAcceptedKeyTypes +ssh-dss

to my opensshd_config file. When I restart sshd, I am told that

May 11 09:33:14 pickles systemd: Started OpenSSH Server Key Generation.
May 11 09:33:14 pickles systemd: Started OpenSSH server daemon.
May 11 09:33:14 pickles systemd: Starting OpenSSH server daemon...
May 11 09:33:14 pickles sshd: /etc/ssh/sshd_config: line 156: Bad
configuration option: PubkeyAcceptedKeyTypes
May 11 09:33:14 pickles sshd: /etc/ssh/sshd_config: terminating, 1 bad
configuration options
May 11 09:33:14 pickles systemd: sshd.service: main process exited,
code=exited, status=255/n/a
May 11 09:33:14 pickles systemd: Unit sshd.service entered failed state.
May 11 09:33:14 pickles systemd: sshd.service failed.

Don't think I made a typo but that has not been the first time. What
else could I be missing here? This is openssh 6.6.1 in RHELS 7.2