Scunthorpe stretched their unbeaten run to 10 games under new manager Russ Wilcox with a 0-0 draw at home to AFC Wimbledon.
But he felt the result was a reality check for the League Two leaders, who found themselves frustrated for long spells.
They could not find a way past goalkeeper Ross Worner as he produced a man of the match performance for the visitors with three good saves to deny Scunthorpe's leading marksman Sam Winnall.
"Sometimes you have got to give credit to the opposition. Wimbledon made life difficult for us," said Wilcox.
"Whether this point will be a good one for us or not, we will see at the end of the season.
"But this was maybe a bit of a reality check for for us. We have been on a great run and, although it has not come to an end, it does feel a bit like that.
"Now we are top of the table, we know that teams are going to make things difficult for us, getting plenty of men back behind the ball.
"We have got to be creative enough and good enough to overcome that.
"I thought we lacked intensity to our play in the first half. We increased the intensity in the second half and got the crowd behind us, but we could not find the creativity to break them down.
"We were not good enough in the final third.
"But we have not to let ourselves get down. There were still many positives for us to take out of the game.
"We care still two points clear at the top of the table and have got a squad now where there is going to be plenty of competition for places."