The European Convention on Human Rights is a comprehensive system that sets the European standards for the protection of fundamental human rights. However, in certain circumstances, the contracting states can validly deviate from their obligations under the Convention. In this regard, Turkey notified the Council of Europe of its intention to derogate from its Convention obligations following the coup attempt on July 15th 2016. The Turkish authorities issues a State of Emergency ruling which extended the duration for which a person can be held in custody prior to making a first court appearance, up to 30 days. This article asks whether that measure complies with the conditions set out in the ECHR’s derogation clause, specifically Article 15. First, it examines whether the necessary legitimate foundations exist to justify a derogation claim, by analyzing the legality of Turkey’s State of Emergency declaration. It then explores the scope and implementation of this measure and asks whether Turkey has gone beyond what is strictly required by the exigencies of the situation. Finally, it reviews whether the measures imposed by Turkish authorities are consistent with its other international obligations.