Tickets issued for President Donald Trump’s first State of the Union address Tuesday contained a typo.

Photos of the typo, which said “State of the Uniom” instead of “State of the Union,” quickly spread on social media.

A source in the U.S. House of Representatives Sergeant at Arms, which prints the tickets, confirmed that there was a misprint on the ticket — but it wasn’t immediately clear how many tickets were printed with the typo.

The office is reprinting the tickets, according to the source. About a dozen of the tickets are left to be exchanged.