Haas team boss Guenther Steiner has played down Ferrari's decision not to give them and Alfa Romeo the updated engine in Spain.

Earlier in the week, team boss Mattia Binotto confirmed the Scuderia will take the risk of introducing the new unit in Barcelona a full month ahead of schedule.

This sees a reverse in the usual system run by the Italian team where customers get the update first to test the reliability before the works team then installs into their cars.

"Doing it at the same time is always logistically very difficult for them so one reason or another, depending on the upgrade, they asked us if we are OK and we are fine with it," Steiner said of the delay.

"In the end, they need to manage the engine and the mileage and all that stuff. 

"We are pretty happy with what they have suggested. It hasn't been decided if we do it in Monte Carlo or Canada."

Ferrari's move highlights just how eager they are to end Mercedes' dominant start to 2019, having scored four 1-2 finishes in the opening four races.

Steiner was asked, however, if he was worried that the delay could hurt Haas' competitiveness in the super-tight midfield fight.

"I don't think so because I don't know what they have got. I have nothing to compare with," he admitted.

"It is just a decision we took. That is it, there is nothing behind it. It is a bit of a different spec and it is fine."