"I don't think it is credible'', Mr Goff told reporters this morning.
"It was never disclosed to the McPhail inquiry. The McPhail inquiry was flawed in that it simply accepted his word on everything.''
Ms Provost's report had upheld the fact that Mr Wong had used taxpayers' money on the June 2008 trip, "and that money should be repaid''.
In her report, Ms Provost recommended the Parliamentary Service "consider what steps it needs to take to correct this situation''.
Parliamentary Service manager Geoff Thorn said his department was considering Ms Provost's report before taking action although that might include asking the Wongs to repay the outstanding amount.
Ms Provost said her office had been able to use detailed diary entries provided by Mr Wong's former business associate Stephen Preest that showed "Mr Wong was in or around Lianyungang and involved in detailed business activity for these two weeks".
Mrs Wong said her husband had relied on information received from the hovercraft company to ascertain the dates that he visited there.
She hoped "any mistake made was unintentional".
Ms Provost said her office's investigation "did not reveal any pattern of wrongdoing by Mr or Mrs Wong".