Oldham boss Paul Dickov has no fresh injury or suspension concerns.
Midfielder Ritchie Jones missed last Saturday's defeat at Leyton Orient with a hamstring strain picked up against Sheffield Wednesday four days previously.
However, he has returned to training and should be available for the clash with Gus Poyet's side.
Dickov's men have not won in their last nine games and failed to find the net in seven of the last eight games.
That dismal run has left the Latics 15 points adrift of the top six but Dickov is hopeful that an upturn in form will come soon.
He said: "If we keep doing the right things, then the confidence will come back and so will the right results."
Brighton manager Gus Poyet has no fresh injury concerns.
The Seagulls will still be without Jim McNulty, who has been sidelined with an ankle injury since November.
Jamie Smith has not featured this year as he continues his recovery from a foot injury.
Top scorer Glenn Murray will be buoyed by his nomination for the npower Player of the Year Award. The striker scored his 18th goal of the season in the 2-0 victory over Tranmere.
Fran Sandaza scored in injury-time to give Poyet's men a 2-1 victory at Prenton Park in September.
