A 27-year-old man was slashed in the face with a box cutter inside a Brooklyn subway station Tuesday afternoon, police said.

The victim got into an with a 31-year-old man when the older man slashed him once on the right side of his face around 4 p.m. in the station near Nevins and Schermerhorn Street in Boerum Hill.

EMS took the victim to Methodist Hospital. He was expected to survive, cops said.

It wasn’t immediately clear what started the altercation.