Procedural justice advocates argue that fair procedures in decision making processes can increase participant satisfaction with legal institutions. Little critical work has been done however to explore the power of such claims in the context of mass violence and international criminal justice. This article critically examines some of the key claims of procedural justice by exploring the perceptions of justice held by victims participating as Civil Parties in the Extraordinary Chambers in the Courts of Cambodia (ECCC). The ECCC has created one of the most inclusive and extensive victim participation regimes within international criminal law. It therefore provides a unique case study to examine some of claims of ‘victim-centred’ transitional justice through a procedural justice lens. It finds that while procedural justice influenced civil parties’ overall perceptions of the Court, outcomes remained of primary importance. It concludes by analysing the possible reasons for this prioritisation.