I received a T5013 from my partnership. Why does Turbotax count twice the income from T5013 Box 120 (professional income), which I then put in T2125 (to claim expenses)?

For tax year 2017 I received a T5013 from my partnership with a Box 120 number (professional income) and a Box 121 number (gross professional income). I filled the T5013 in Turbotax then I took the number from Box 120 and put it in Part 3B of T2125 so I can claim some personal expenses (vehicle, meals, etc.). Turbotax counts this income twice. How can I reconcile the income on the two forms?