The issue of the relations between the European Court of Justice and the constitutional courts of the Member States is a topic of great importance. The latest proof of that is the PSPP judgement of the German Constitutional Court. It has also shown what might happen if judicial dialogue is abandoned. The aim of the paper is to consider the consequences of the PSPP judgement as well as to analyse the conditions for the restoration and development of trust between the courts. The author presents the concept of ultra vires which has been used by the German Constitutional Court. In subsequent parts of the paper, the discussion focuses on the PSPP judgement and the surrounding scholarly debate and points out the consequences for both sides of the dispute. In the author’s opinion, the PSPP saga may, under some conditions, have positive implications for judicial dialogue.
