  We investigate the possible appearance of composite states of the goldstino
in models with four-dimensional non-linear supersymmetry and we provide a
description of their dynamics in terms of a K\"ahler potential and a
superpotential. Our analysis shows that the critical point corresponding to the
Volkov-Akulov model is unstable. Similarly, we find that the uplifted stable de
Sitter critical point of the KKLT model is shifted and acquires a tachyonic
instability. Our findings indicate the existence of a potentially dangerous
instability shared by all anti-brane uplifts.
