It is well-known and the subject of much criticism that children seeking asylum in many EU Member States are detained, a situation that is facilitated by the detention provisions of key instruments of the Common European Asylum System. Sometimes the detention is said to be justified on the grounds that it is protective detention. But generally, detention of children is regarded as being inimical to the protection and care of children. For this reason, the Convention on the Rights of the Child has developed stringent standards for the detention of minors to ensure that they are protected from detention and, if detained, that they are protected in detention. As informal trilogue discussions begin on the instruments that will make up Phase Two of the Common European Asylum System, this article explores whether the existing and proposed instruments safeguard the right of the child to liberty.