Houser, 28, joined the organization in 2018-19 when he signed an AHL deal with the Rochester Americans. He has primarily manned the net for the Sabres' ECHL affiliate, the Cincinnati Cyclones, in that time.
He signed an NHL contract for the remainder of this season on March 19.
Last season in Cincinnati, he posted a 16-5-5 record in 26 games. In 2018-19, he was the ECHL Goaltender of the Year and an All-ECHL First Team selection.
Houser served as the Sabres' backup on March 24 and 25, but has yet to appear in an NHL game.
Buffalo will take on the Washington Capitals on the road tonight. Faceoff is set for 7 p.m. on MSG and WGR 550. Pregame coverage begins at 6:30 on MSG.
The Sabres are currently dealing with a number of injuries between the pipes.