Ludite or Luddite: How To spell?

The word Ludite is misspelled against Luddite, a noun meaning "One of a number of riotous persons in England, who for six years (1811-17) tried to prevent the use of labor-saving machinery by breaking it, burning factories, etc.; -- so called from Ned Lud, a half-witted man who some years previously had broken stocking frames."