Conor McGregor has given €10,000 (approx. $11,620) to a sick Irish boy who needs surgery.

Last year, 5-year-old Bryan Buckley, who is known as Bru, was diagnosed with sepsis, which has since left him unable to eat or walk and with an NG tube in his nose, BreakingNews.ie reports.

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His mother Grainne started a GoFundMe page in an effort to raise funds to help Bru “get private care and the help he deserves.”

Why can’t I walk since I was in temple street hospital last year, none of the doctors will tell my mammy @HSELive pic.twitter.com/KQQZWDTQVL

— Grainne McCullough (@GrainneMcCullou) May 28, 2018

Despite being set up in July of last year, the fundraising page had raised just over €3,000 out of the €10,000 goal.

McGregor then made a donation of €10,000 to the account.

@TheNotoriousMMA we are forever grateful ?????? I will never forget what u have done for my boy u truly are a legend ??????? pic.twitter.com/Gryz5wWOti

— Grainne McCullough (@GrainneMcCullou) September 27, 2018

Although McGregor intended to remain an anonymous donor, Grainne couldn’t help thanking the MMA fighter on Twitter.

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“We are forever grateful. I will never forget what u have done for my boy u truly are a legend,” she wrote.