Ryan Inniss will be available for Tuesday's game against Forest Green Rovers.
The defender was sent off in the 79th minute of Saturday's game against Fleetwood Town for denying an obvious goalscoring opportunity.
The club appealed the decision and a claim of wrongful dismissal was upheld by an independent Regulatory Commission.
The Addicks travel to Forest Green on Tuesday. Supporters in the UK and abroad can watch all the action live on CharltonTV. Click here to purchase your pass.