Derby manager Nigel Clough remained upbeat after his team's winning start to the npower Championship season came to an end with defeat to Burnley.
Charlie Austin punished two second-half mistakes either side of Theo Robinson's reply to give the Clarets a 2-1 victory, their first league win of the season.
But Clough was far from downhearted after the Pride Park setback, and said: "I don't want this to diminish the start we've had."
He added: "12 points from 15 has been absolutely brilliant and the manner in which we've achieved them.
"The difference between the previous four matches and this one was we gave the first goal away in a sloppy manner. Mark O'Brien is only 18 and he will learn from it, the next time he will put the ball 20 rows back in the stand which is what he should have done at 0-0 at home.
"There are a lot of disappointed faces and disappointed players in there that we haven't gone on and got a least a draw from the game.
"We have to take stock and learn that when we get back to 1-1 we don't lose the game from that point."
Burnley manager Eddie Howe was delighted with the way his team weathered a Derby fightback to claim their opening Championship win.
Howe said: "I thought the game was there for the taking at half-time. We got our noses in front and looked quite comfortable but then Derby got going and put us on the back foot a bit.
"They equalised and you feared for us for what has happened this season but thankfully the lads dug in and showed great resilience and team spirit and all the hallmarks of a a good side."
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