"There were a lot of plus points to come out of the game and this performance should give us a big lift," said Bruce.
"For long spells we went head to head with them butThe one thing we have got to eradicate is the elementary mistakes at the back that we can't afford at this level.
"That was typical of van Nistelrooy and that is why he is worth £25 million.
"He comes alive in the box but we shouldn't have allowed the cross to be put in and then we have given him space to turn."