Singapore will decriminalize sex between men, but has no plans to change the legal definition of marriage as being between a man and a woman, Prime Minister Lee Hsien Loong said on Sunday.

LGBTQ groups welcomed Lee's decision to repeal Section 377A of the penal code, a colonial-era law that criminalizes sex between men, but also expressed concern that ruling out same-sex marriage would help to perpetuate discrimination.

In his annual national day rally speech, Lee said Singaporean society, especially young people in the city-state, were becoming more accepting of gay people.