Since 1530 the second audiencia had worked in accordance with a royal decree of 1530 forbidding all further enslavement of Indians, which had previously been allowed only during warfare or by buying Indians that were already slaves. In 1534 the Crown responded to appeals by colonists who argued that they needed slave labor to continue to make profits by repealing this law and legalizing a limited form of slavery once again. The argument put forth was that Indians were recently becoming unruly, that there were no longer any causes for "Just War", and that already enslaved Indians would benefit from having Christian masters rather than Indian ones.