The effect of the denunciation of the ICSID Convention is a controversial issue in the international arbitration community. Articles 71 and 72 of the ICSID Convention –which regulate the process and effects of denunciation of the treaty– have given rise to contradictory interpretations in both case law and doctrine. In this article we argue that, while it is possible to bring a claim before ICSID against a State that has denounced the Convention, the jurisdictional risks involved would seem unjustified given the existence of alternative fora to ICSID (such as ad hoc arbitration under UNCITRAL rules) and the fact that some of the advantages commonly attributed to the ICSID system (such as the enforcement of the award under article 54 of the Convention) would no longer be available to the investor after six months from the notification of denunciation.