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.

Work on Guernsey's Victor Hugo Centre may begin by Easter '27
Channel Islanders in the Middle East told to follow local warnings
Unprecedented demand for cesspit emptying in Guernsey
Food will not be exempt from GST in Guernsey
Victor Hugo Centre fund reaches £7.5M
"We want our schools to be smartphone-free environments"
Assisted dying will be offered in Jersey
Guernsey Man (23) jailed for abusing teen girl