Leicester City manager Nigel Pearson admitted his side were "slightly off the pace" as they were held to a 1-1 draw at Preston.
City were unable to hold on to their first-half lead at Deepdale that came through a stunning volley from centre-half Liam Moore.
Preston leveled the scores and ended City's 100 per cent pre-season record when Tom Clarke took advantage of a mistake from City goalkeeper Kasper Schmeichel.
Pearson said he learned a lot about where his players were at, as his side builds up to their Premier League opener against Everton in two weeks.
"I don't like conceding any goals but I would expect us to do better than that, but that is something for us to work on," said Pearson.
"We were slightly off the pace today. We weren't as fluid at times as we have been. There were various reasons for that and it always interests me when people want to read too much into pre-season games
"I like us to win as often as possible and it's a good habit to have but when you have occasions like today where we have not quite found the fluidity that I would expect from us then it is a good lesson in the sense that we can speak about the fact that we have got to be at full tilt.
"There has to be some perspective. It is pre-season. I cast my mind back to last year and the Northampton game (a 2-1 pre-season defeat), it's not the end of the world when results don't go right. What you are looking for is the players to have an understanding of what we are trying to do and got our application right.
"We have very good competition for a number of places now. It will be an interesting last couple of weeks."
There was an injury concern in the first half when Jamie Vardy was replaced by Riyad Mahrez just after the half-hour mark.
Vardy had missed the pre-season opener at Ilkeston after picking up a knock in training but made his return for the Everton game in Thailand.
Pearson confirmed that Vardy had a tight thigh and was substituted purely as a precaution.
"I want him available for the start of the season, so I don't see any mileage in putting players in situations where there is a potential for them to actually injure themselves and keep them out the side. It was just a precaution," said Pearson.