The 28-year-old businessman - who has two-year-old son Mason with the reality star and the couple are currently expecting a daughter - explained as the pair are not married, he would rather people referred to him as Mason's father.
Speaking on Khloe Kardashian's radio show 'Mix Up with Khloe Kardashian Odom', he said: ''I'd like to be referred to as the child's father. I hate that term baby daddy!''
Kourtney has previously claimed that despite pressure from her mother Kris Jenner to marry Scott, she isn't bothered about tying the knot, as she is happy with her ''family unit''.
She told Kris in a recent episode of 'Keeping Up with the Kardashians': ''That's not up for discussion, nor do I care what anyone's thoughts are.''
''I definitely don't want to get married just for the sake of getting married. This is my life. I don't need a piece of paper to make it a family unit. I don't want to get married right now and I don't have to listen to my mom or anyone else!''