Question about cc:stable and git send-email

Hello I was trying to do The right thing (TM) with a patch for a regression. I did my homework and found which commit introduced the error using git blame and also found out when that commit was introduced using git describe. I added the tags: Fixes: XXXXXXX (XXXX) CC: stable@vger.kernel.org # 4.4.x- But when I do git send email, it automatically adds # and 4.4.x- as recipients, failing to send the mail. What am I doing wrong? Thanks! -- Ricardo Ribalda