Preterm born children have more behaviour problems than term born children. Perinatal risks, current child functioning, sociodemographic characteristics, parental psychological distress and parental perceptions of child vulnerability (PCV) have been shown to be risk factors for behaviour problems. However, the role of maternal and paternal PCV is unclear, as these have not been investigated as a risk factor for behaviour problems, with all other risk factors taken into account. Aim of this study is to investigate whether maternal and paternal PCV are independent risk factors for behaviour problems in very preterm (VP) and term born children. The present study is a single centre prospective cohort study. Preterm children (n = 104), born at <30 weeks' gestation and/ or birth weight <1000 g, and term children (n = 95) were assessed at age 5. Results showed that risk factors for parent-rated behaviour problems were low/middle parental education, VP birth, parental stress and, in VP children, maternal PCV. Risk factors for teacherrated behaviour problems were low/middle parental education, foreign parental country of birth, intrauterine growth restriction and objective child vulnerabilities. It can be concluded that maternal PCV is a risk factor for parent-rated behaviour problems in VP