Sir Alex Ferguson believes Manchester United's capacity to launch comebacks "is credit to the character of the club" but accepts there are improvements to be made defensively.
United are currently two points clear of Manchester City at the top of the Premier League thanks to their 3-2 victory over Aston Villa last weekend as substitute Javier Hernandez inspired a spectacular comeback.
Ahead of Saturday's visit to Norwich City, where Ryan Giggs netted a late winner in February, Ferguson has spoken of the particular delight that comes with snatching victory at the death.
"It does feel different," he said. "The dressing room is different when you get these late goals, or you come from behind. It makes an impact because there is more excitement. We have experienced it many times and it is credit to the character of the club that we can do it."
In all competitions, United have been behind in 11 of their 17 games this season and, while they have 14 wins to their name in the campaign so far, Ferguson knows they must tighten up defensively.
"You don't expect to be behind by two goals," he said, referring specifically to the trip to Villa Park. "It is not that we underestimate anyone - we just don't expect a Manchester United team to be two behind. You go into games believing you will be two ahead.
"It won't happen all the time. It is not a gimme that you can come back from two goals down. That is the area where hopefully we will improve. Hopefully we will defend better and not lose the advantage of what we experienced last week."
United are likely to be without Wayne Rooney and Jonny Evans for Saturday's game, but Robin van Persie is expected to start.
Information from the Press Association was used in this report.