President Donald Trump misquoted the oft-used Pearl Harbor speech from former President Franklin Delano Roosevelt when honoring Pearl Harbor Remembrance Day on Thursday morning.

“National Pearl Harbor Remembrance Day – ‘A day that will live in infamy!’ December 7, 1941” Trump wrote on Thursday morning.

The actual quote, which Roosevelt gave during a speech on Dec. 8, 1941, is a “date which will live in infamy.”

Here’s the actual speech:

The quote is well known and is repeatedly shared each year on the anniversary of the Pearl Harbor attacks. During the speech, Roosevelt asked for a declaration of war, thrusting the country into World War II.

Obviously, Trump’s misquote of Roosevelt’s famous speech was quickly mocked. An hour later he tweeted out a video honoring Pearl Harbor Remembrance Day but did not delete the botched tweet.

If only the President of the United States had staff available to him that could potentially get one of the most famous quotes of the 20th century correct. "…a date which will live…" and probably no exclamation point seeing as how FDR understood tone and mood. https://t.co/X2Lwo5J8pt — Russ Murdock (@RussMurdock) December 7, 2017

Can't even copy and paste a quote right https://t.co/sbkqusSoL4 — Jose Serrano (@Tony_Serranous) December 7, 2017

A tweet *which* will live in infamy https://t.co/0ZX4wtUrOe — Sam Stein (@samstein) December 7, 2017

He can’t even get the quote right. ‘A date that will live in infamy’ is what FDR said. What a 🤡 White House…. #Resist #TrumpResign https://t.co/yhIEarIQUE — Ian (@elvis717) December 7, 2017

https://twitter.com/dave_taft/status/938796126341394432

Trump truly isn’t alone though. His wife, Melania, also messed up her Pearl Harbor tribute.

Pearl Harbor happened in December, the 12th month of the year.