A gay couple in Buenos Aires, Argentina, have had their wedding halted after a judge intervened at the last minute.

Jose Maria Di Bello and partner Alex Freyre planned to marry today on World AIDS Day after Judge Gabriela Seijas ruled last month that the ban on gay marriage violated Argentina’s constitution.

But yesterday, Judge Marta Gomez Alsina ruled that the first judge did not have the authority to give the couple permission to marry.

Alsina wrote: “The decision I have adopted should not be interpreted as … discrimination against the rights of homosexuals.”

Di Bello and Freyre said they would go to the registry office today, saying: “We have a firm and irrevocable ruling. They’ve only managed to postpone it.”

Buenos Aires has offered civil unions since 2002. In Mexico City and Uruguay similar civil ceremonies are offered, but up until now nowhere on the continent has allowed full marriage.