According to mainstream conceptions of the European sovereign debt crisis, a series of corrective rationality measures capable of regularizing a crippled economy, suffice to get countries out of their financial impasse. Policies need to transcribe into legal terms an economic and political discourse that supposedly outlines an exit from the economic recession. This rational mechanism of transcription is not always linear. Focusing on the constitutional judge, we draw on the case of austerity to demonstrate that the rational, forecasting function of the mechanism of the transcription of the political discourse into legal terms is not always possible. Through his competence to interpret the Constitution, the judge can refute the rational mechanism of transcription prognosis. Is the Greek Constitution capable of implementing the different interpretations offered by the judge and did the judge manage to save the Greek constitution from challenges of the sovereign debt crisis?