Leyton Orient are sweating on key men Stephen Dawson, Ben Chorley and Charlie Daniels ahead of the short trip to Charlton.
Skipper Dawson hobbled out of last weekend's 5-1 defeat by Yeovil with a dead leg and was replaced in midfield by Jimmy Smith.
He will be handed a late fitness test along with centre-half Chorley, who has a thigh problem, and left-back Daniels who missed out against the Glovers with an ankle injury.
To add to manager Russell Slade's problems, midfielder Matthew Spring starts a three-match ban after Orient's appeal against his red card last Saturday was rejected.
But on-loan Tottenham winger Paul-Jose Mpoku will be back in the squad after returning from international duty with Belgium's Under-19s.