Joyce repays expenses as Labor cries foul George Brandis and Barnaby Joyce could face an investigation into their use of travel entitlements, as Mr Joyce revealed he had repaid expenses claimed while attending the wedding of a close friend and shock jock. Senator Brandis had already agreed to repay nearly $1700 in entitlements. But on Monday Mr Joyce, the Agriculture Minister, said he had sent a cheque for about $650 to the Department of Finance. The funds cover the use of a Commonwealth car to drive him to and from the wedding of ex-2UE host Michael Smith in 2011. The men have denied any wrongdoing, despite leaping to correct the balance sheet. On Monday, shadow Attorney-General Mark Dreyfus wrote to the Department of Finance requesting it investigate the detail of the two ministers' expense claims, including the justifications they used for the trips. Mr Joyce last night confirmed to Fairfax Media he had sent a cheque for $615.90 to the Department of Finance. "I repaid the Comcar expenses," he said. There is an ambiguity and we should clear this up. Those comments were in marked contrast to those made by Mr Joyce earlier in the day when he doubled down on his defence of using public resources to attend a wedding at which he read a poem, Fair Dinkum Love. The wedding, Mr Joyce argued, was "a work day like any other." "They're all private functions at which you spend most of the time talking about politics," he said. Mr Joyce said a Comcar had taken him to the central coast wedding from Sydney on a Sunday and then back at 3am on Monday morning. An irate Mr Joyce had also confirmed to Fairfax Media that he would not be repaying the cost of a $400 return flight to Moree because he said his original reason for coming to Sydney - to appear on Channel Ten's The Bolt Report - was legitimate. "How do you intend for me to get home?" he said. Senator Brandis repaid on Sunday nearly $1700 in entitlements, including his overnight "official business" allowance and return flight to Brisbane, saying he would prefer to settle "uncertainty [about entitlement use] in favour of the taxpayer." The Attorney-General maintained his claims were within his entitlement. But a former long-serving secretary to the Remuneration Tribunal, Betty Collins, said the ministers' justification "didn't cut it." Merely attending for networking purposes? For heaven's sake we all love to do that but we don't get paid for it," she said. It's neither parliamentary, electorate nor ministerial business. The opposition ramped up attacks on Mr Brandis' character on Monday, accusing him of hypocrisy after he had led very public attacks on Craig Thomson and Peter Slipper over their fiddling of expenses. Mr Dreyfus has written to ask the Department of Finance to dig out the minister's original travel expenditure claims.