Max contribution for profit sharing keogh solo 401k

I have a regular W2 job that I contribute to the max elective amount to pretax 401K in 2023. I have a side job being a realtor that I made a net profit around 19K. I plan to make profit contribution as an employer. When I tried to max profit sharing, Turbotax automatically calculate the amount which is the full amount of the net profit of 19K, isn't that only Max of 25% of net profit can be contribute as an employer?