Marathon chocolate bars will return to Ulster's shops, almost 18 years after they were rebranded Snickers.
Mars changed the Marathon name in the UK in 1990, opting instead for the more global-friendly Snickers name instead.
Mars has now re-registered the Marathon brand as a trademark in the UK.
It follows the reintroduction of Opal Fruits (Starbursts) and the Wispa bar from Cadbury.
Cadbury pioneered the retro craze by bringing back the Wispa bar for 'a limited time only'. However the move was so successful that Cadbury brought it back permanently.
Snickers bars were introduced in the 1930s. It was named after the Mars family's favorite horse. It is the best-selling bar of all time with annual global sales of $2bn.
A spokesperson for Mars said there are "no immediate plans" for the rebrand.