Guernsey's States has supported investment in the island's native patois, as well as a request to make it and Francais official languages.
Guernesiais and French are to become official languages of Guernsey.
It follows a successful amendment - tabled by Deputy Jonathan Le Tocq and Deputy Paul Le Pelley - to Education Sport and Culture's request for funding the development of the island's native tongue.
That received widespread States support, meaning £300,000 will be invested to prevent Guernsey Norman French dying out.
The money will be given over three years to help the Guernsey Language Commission increase learning and preserve the island's unique dialect.

Guernsey's Animal Shelter warns of myxomatosis outbreak in wild rabbits
Home of Guernsey Football celebrates its one year anniversary
Renaissance 'masterpieces' on display in Guernsey
Guernsey's airline reacts to reduced demand because of Iran attacks
Survey reveals scale of dissatisfaction with off-island travel
Two youngsters questioned by Guernsey Police after fire at Leale's Yard
Prominent Guernsey consultant cardiologist suspended by the GMC
Guernsey FC features on Premier League social media