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 homelessness charity supports more than 125 people in first year
Guernsey Pancake Day fundraiser cancelled
American descendants encouraged to visit Guernsey
Boat fare waived for entertainers travelling to Guernsey
More than 250,000 visitors to Guernsey in 2025
First Michelin star awarded in Guernsey in more than a decade
Guernsey Fire & Rescue Service needs "investment and modernisation"
Engine room fire onboard DFDS freight ship