Daf Yomi - Yoma 87 - 2X or 3X?

Daf Yomi - Yoma 87 - 2X or 3X?

The Gemora states that if one commits a transgression and repeats it, it becomes like it is permitted to him. The Mabit in Beis Elokim (shaar hateshuva ch 11) writes that our sages have said if one commits a transgression three times, it becomes like it is permitted to him. Did he have a different version in the Gemora than us? Our Gemora states this to be correct if a person does an aveira even twice.