Harlequins' director of rugby Conor O'Shea is refusing to get carried away by his side's excellent start to the season.
The reigning champions made it three wins out of three with a 37-14 victory over Sale at The Stoop.
"I am pretty happy to take 15 points from the 15 points available," said O'Shea.
"Every game is a tough proposition at this level but it is very early days.
"It was a far from perfect performance, we didn't protect the ball enough and started to force it too much.
"There was one offload too many and we lost the penalty count 12-10 which is unusual for us."
Sale coach Bryan Redpath added: "The scoreline is not a fair reflection.
"We coughed up too much possession and gave away a soft try just before half-time.
"Danny Cipriani missed a couple of pots at goal but we looked dangerous in parts. Discipline let us down and our set-piece didn't function.
"Our attack was better today but we conceded too much in defence. However, we have played two of last season's top five away from home."