President Donald Trump isn’t the only member of the Trump family to make spelling mistakes on Twitter.

On Tuesday morning, the phrase “United Kingston” quickly began trending on social media after Ivanka Trump congratulated former London mayor Boris Johnsonwho was elected Conservative party Leader in Great Britain this week, for becoming the United Kingdom’s next prime minister. In the post, the first daughter and senior White House adviser misspelled United Kingdom as “United Kingston.”

Ivanka’s tweet was eventually deleted, but it was up long enough for several users to take screenshots and turn it into a trending hashtag.

Ivanka Trump eventually corrected the tweet with proper spelling around 30 minutes later.

Johnson, who is famously pro-Brexit, will succeed Theresa May as prime minister on Wednesday.

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President Trump congratulated Johnson in his own tweet Tuesday morning:

Last month, Donald Trump drew jokes from many Twitter users after he called Prince Charles of Wales the “Prince of Whales.”

“I just met with the Queen of England (U.K.), the Prince of Whales, the P.M. of the United Kingdom, the P.M. of Ireland, the President of France and the President of Poland,” Trump tweeted on June 13.