Toblerone is to remove the Matterhorn mountain peak from its packaging when some of the chocolate's production is moved from Switzerland to Slovakia.
The pyramid-shaped bar, which mirrors the Alpine peak, will undergo a labelling revamp and include its founder's signature, its maker said.
US firm Mondelez said the image of the 4,478m (14,692 ft) mountain will be replaced by a more generic summit.
Strict rules have applied about "Swissness" since 2017.
They state that national symbols are not allowed to be used to promote milk-based products that are not made exclusively in Switzerland. For other raw foodstuffs the threshold is at least 80%.
