The “United Kingston” trended Tuesday morning after a tweet from White House adviser Ivanka Trump Ivana (Ivanka) Marie TrumpThe Hill's 12:30 Report: Trump stokes fears over November election outcome Special counsel investigating DeVos for potential Hatch Act violation: report Trump, Biden vie for Minnesota MORE's account misspelled “United Kingdom.”

The misspelling occurred in a tweet congratulating Boris Johnson for becoming the U.K.’s next prime minister.

The tweet has since been deleted, but not before several users reposted screenshots of the message.

Saving before it gets deleted: "United Kingston" pic.twitter.com/GrKJ6yGgbJ — Kyle Griffin (@kylegriffin1) July 23, 2019

Several reporters and other social media users knocked Trump about the mistake.

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Congratulations indeed to the United “Kingston”. pic.twitter.com/phqFVGgVbI — Philip Crowther (@PhilipinDC) July 23, 2019

The marvellous thing about becoming the PM of the United Kingston, no matter how sincere or credulous, is that it is an Empire upon which the Sun will never set, especially having never existed in the first place. pic.twitter.com/OkeuRZu1by — Count St Germain (@CountStGermain) July 23, 2019

Big day for the United Kingston pic.twitter.com/Jj7al5zwMS — Yasmeen Serhan (@YasmeenSerhan) July 23, 2019

Trump has since posted another tweet that fixes the spelling error.

Congratulations @BorisJohnson on becoming the next Prime Minister of the United Kingdom. — Ivanka Trump (@IvankaTrump) July 23, 2019

Johnson, the U.K.’s former foreign secretary and a fierce Brexit supporter, won the Conservative Party's leadership contest on Tuesday and will replace Theresa May Theresa Mary MayAre US-Japan relations on the rocks? Trump insulted UK's May, called Germany's Merkel 'stupid' in calls: report Bolton says Boris Johnson is 'playing Trump like a fiddle' MORE as prime minister on Wednesday.

President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE also congratulated Johnson, tweeting Tuesday morning, “He will be great!”