Gunther Steiner has confirmed reports that he is seeking compensation for Haas's repair bill from last weekend's Malaysian Grand Prix.
In practice, Romain Grosjean's car sustained a reported $650,000 (£490,000) in damage when a drain cover came loose on the Sepang circuit.
An invoice made out to Sepang boss Razlan Razali did the rounds on the internet, but it turned out to be a fake.
"It is purely a malicious attempt by certain parties to somehow disrupt the finale of the Malaysian Grand Prix this year," Razali said.
Yet Steiner has confirmed that Haas are indeed pushing Sepang to pay the bill.
"We can't simply say 'Ok, we lose three quarters of a million dollars because someone forgot to do some welding," he is quoted as saying by Marca.
"We paid to come to Malaysia - everyone pays. We have talked about it and they were professional.
"They have insurance, so let's see what we can do."
Haas sit eighth in the constructors' standings ahead of this weekend's Japanese Grand Prix.
