The Addicks won 1-0 at the City Ground back in March, and were hopeful of repeating that result when they travelled to the East Midlands today.
The game got off to the worst possible start for Forest, with Charlton's England Under-19 international Callum Harriott giving Bob Peeters' side the lead after just ten minutes.
It proved to be a hugely frustrating game for Forest, who racked up 16 shots on goal, but could only scored once, with substitute Robert Tesche equalising on the hour mark.
Forest's profligacy in front of goal was largely down to the absence of star striker Britt Assombalonga, who was suspended for today's game through suspension.
Only five of those 16 shots were on target, whilst Charlton managed to score once from just four shots in a game of missed chances for Stuart Pearce's Forest.
The result leaves both teams on 29 points, three points off a place in the top six - and a play-off spot.