The Canaries have acquired a reputation for scoring in the closing stages of matches on their march to second place in the npower Championship table, and Henri Lansbury popped up at the death at Carrow Road to ensure the pattern was repeated.
On-loan Arsenal youngster Lansbury's free-kick against a post allowed defender Elliott Ward to score Norwich's first goal, which cancelled out Theo Robinson's opener in the 56th minute.
Jackett said: "It's obviously very disappointing and hard to take after being 1-0 up. After we scored our goal, we had a lot of the ball and, with Norwich then pushing forward, we had a number of chances to get the second goal - which we needed.
"There was no lack of effort from the players but we had some good situations and needed to capitalise on them but we didn't do that and, in the end, we got punished.
"All we can do now is put this behind us as quickly as possible and move on. There is a good spirit here and a lot of quality, and we've got to make sure we're ready for Doncaster on Saturday."
Source: PA
Source: PA