Red Bull team principal Christian Horner could not hide his exasperation in Malaysia at speculation that the team's new front wing contravened F1 rules.
Rival teams suspected the wing was more flexible than allowable under the current regulations, with McLaren driver Jenson Button saying this week that "a few people think it flexes more than is correct."
"There's been so much said about the front wing that I probably don't need to add to it in this forum," Horner said.
"We run a bit more 'rake' in the car and when you run the rear a bit higher, the front a bit lower, you end up with a visual difference. That's the way it is. The car complies with the 'regs'. The FIA is happy with that and we're very comfortable with that."
Mercedes team principal Ross Brawn was not convinced the difference was merely visual, but acknowledged the Red Bull front wing had passed all tests, even if rival teams had presumed they would not.
"Over the winter, a lot of teams assumed with the new test that the situation was going to change and it hasn't, so we're faced with what we have, and we have to make sure we produce as competitive a car as we can," Brawn said.
"Teams have got to decide if that (front wing) is the reason, or one of the reasons, for their (Red Bull's) level of performance. If it is, then you need to consider going that route yourself or make sure it's not an excuse for the fact they're winning everything at the moment."