Jon Brady has revealed that the Head of the Referee's association has been in touch with him to apologise for the award of the penalty on Tuesday night.
Jack Sowerby was penalised for a foul on Jake Forster-Caskey in the second half at Charlton, a decision the Cobblers felt was harsh at the time, and Brady revealed he has now received an apology and the matter is now closed.
“We spoke to the Head of the Referee’s association and they apologised for the decision but we now have to draw a line under the matter and move on," he said.
“Things like that build your resolve and now we have to be even stronger.
“We know that we probably weren’t at our best offensively at Charlton as we had been in the previous six games but we feel we could have got a draw. It’s done and dusted now though and we move on to Saturday.
“We looked strong defensively but offensively we know we can be much better.
“When you are playing Saturday - Tuesday - Saturday for a long period not everyone is going to maintain the same level. Sometimes that sharpness won’t quite be there but the tempo of our play at the moment is so much higher than it was previously. That will take its toll but we can’t let it be an excuse.”