Queensland's chief guardian of children has called for laws to be changed to keep 17-year-olds out of adult prisons.
In Queensland, children in youth detention are transferred to adult prisons when they are 17.
The state's Commissioner for Children and Young People and Child Guardian Elizabeth Fraser has called for the age to be raised to 18 while giving evidence to Queensland's child protection inquiry on Monday.
Ms Fraser said it would be better for 17-year-olds to serve their time in a youth detention centre until they turn 18.
"I would argue (children) under the age of 18 should be treated within the youth justice system as a matter of priority," Ms Fraser said.