Swansea City head east on Saturday looking for a third successive win against last season's League One Champions but despite seven goals in their last two games, Cotterill knows that the trip will not be an easy one.
"We're not going to get carried away," Cotterill told the official Swans web site
"We've got a great bunch of lads here. We know what we want to do this year and hopefully take confidence from the game [against Preston] into Saturday's game
They've just come up from League One, they have good players and are a big club, so we can't take anything for granted.
"Every game in the Championship is tough so we're not expecting an easy ride up there."