Already promoted to the Barclays Premier League, Burnley hosted an Ipswich side who were searching for a victory to keep their play-off hopes alive.
But it was the team who had nothing to play for that came out on top, Michael Kightly's third goal in as many games earning Burnley the narrow victory.
For Ipswich, their hopes of extending their season were ended as they now sit four points off the final play-off place with just one game remaining.
Yet rather than dwell on his own side's misfortune, Ipswich boss McCarthy was keen to extend his best wishes to Burnley in their Premier League adventure - and in particular one of his former Wolves charges Kightly.
"I thought our performance was very good up until conceding the goal. I thought they started well but I think we grew into the game and got better," McCarthy said.
"I thought we were on top when we conceded, but we missed that one tackle and it changes the course of the game.
"But I was really pleased with my team. You win a game with really good team effort and I thought we had that, but they got a bit of good fortune in terms of missing the tackle but I thought our performance was very good.
"The difference home and away is that they have managed to keep a clean sheet and get a goal - that is the fine margins.
"Without doubt, Burnley are outstandingly good value. They have deserved it, well done to them, and they should enjoy it and not listen to all the doom and gloom.
"Kightly is a good player and if he hadn't been injured as he was at Wolves, he would have been a top player at a top team throughout. And so I am delighted for him that he's back playing at that level because he is a great kid."