Aston Villa boss Unai Emery is confident Emi Martinez suffered only a minor setback in their draw with Brentford.
During the 1-1 result, Martinez was replaced at the interval by Robin Olsen, who made his fourth Premier League appearance of the season.
Emery told the BBC: "Before the match, the last meal, he was feeling bad with his stomach.
"He started the match and played the first half. He wasn't feeling good [at half-time]. Hopefully he'll recover for the next match.
"The second half we were losing the ball so quickly. We didn't keep our position. We conceded a lot of crosses. Normally play like that in 30 minutes and they could score like they did.
"The most important thing was our reaction. Try to compete and be a candidate to play in Europe. We're there. Now is the key moment, the difficult moment, to get to the next step."