Moved to RHEL7 mail -s Broke in Crontab

I moved my server from RHEL5 to RHEL 7 and it went smoothly, but my mail username -s command in crontab is failing to allow a subject, instead it is sending the email to username@host, -s@host, subject@host.

Command is:

Code:00 9 * * * root mail USERNAME -s "TheSubject" < /home/somefile.txtThanks