A slim majority of South Koreans oppose abolishing a law under which people convicted of adultery can be sentenced up to a year in jail, according to a survey released Wednesday.

These South Koreans believe that if penalties for adultery are revoked, illicit sex will increase and public morals will decline, the Korea Applied Statistical Research Institute said its survey indicates.The Justice Ministry has said it will ask the National Assembly to abolish the law, but the institute said 51 percent of those polled oppose the move to drop adultery from the criminal codes.