"We cannot afford to lose our discipline," he Skuse told the Evening Post. "It's something the manager (Gary Johnson) has talked to us about and we have to go there and be professional about the way we conduct ourselves on the pitch.
"There is definitely an extra edge to this game because of what happened last season. Forest will say they were being clever, but we were disappointed with their players and said so afterwards.
"We thought they were un-sporting and it did cause tempers to flare. But that is all in the past and we have to keep cool heads and focus on the job of getting three points.
"We want to avenge last season's defeat at the City Ground, but it's not a matter of us going there to seek revenge."