Andy King has warned his Leicester team-mates that one mistake in the final four games could shatter their promotion dreams.
Nigel Pearson's men are within touching distance of the top six thanks to back-to-back wins over Doncaster and Ipswich.
A win over Millwall on Saturday could be enough to ease them back into the play-off places they left in November.
But as the battle at the top of the Championship heats up with just four games to go only victory in all their remaining games will be enough for King.
"We've always believed we had a chance, even when things have gone against us a bit, but Monday was a massive win for us," said the 23-year-old midfielder to the club's official website.
"The gaffer said we probably needed to win our last six games and that's two of them down now, so we've got a massive game next weekend against Millwall.
"If results go our way again, we could be higher than we think come five o'clock Saturday.
"We've just got to look to the next game now, not get carried away, keep working hard and really try to finish with a flourish.
"Hopefully now I can play a part in us going for that sixth spot."