Sheffield Wednesday boss Gary Megson believes his side can still improve despite beating Chesterfield 3-1 to extend their winning run.
Goals from Lewis Buxton, Gary Madine and Ben Marshall gave Wednesday their fourth straight victory, with Leon Clarke, playing against his old club, scoring for Chesterfield.
"I was really pleased with the result because it was always going to be a difficult game for us," said Megson.
"I thought they looked a decent side at times. When they got their goal, I thought they were stretching us a bit and we were giving the ball away too easily. We didn't pass the ball well and we didn't keep it.
"There are a lot of things we're doing well but we can't turn around and say that everything in the garden is rosy because there is work to do on certain aspects of the game."