Electronic Journal of Differential Equations, Vol. 2004(2004), No. 26, pp. 1-5. Title: A note on a 3-dimensional stationary Schrodinger-Poisson system Author: Khalid Benmlih (Univ. of Fez, Morocco) Abstract: In a previous paper we have proved existence of a ground state for a stationary Schr\"odinger--Poisson system in the whole space $\mathbb{R}^3$ under appropriate assumptions on the data, namely the dopant-density $n^*$ and the effective potential $\widetilde V$. In this note we show that the same result remains true under less restrictive hypotheses. Submitted July 29, 2003. Published February 24, 2004. Math Subject Classifications: 35J50, 35Q40. Key Words: Schrodinger equation; Poisson equation; standing wave; variational method.