This note extends to the continuous-time case the "tube-based" approach for the design of discrete-time robust model predictive control (MPC) algorithms developed in Mayne, Seron, and Rakovie (2005). This extension is of interest in view of the simplicity and popularity of the method as well as of the industrial relevance of continuous-time implementations of MPC. The proposed robust control law is composed of two terms: (1) a sampled-data MPC control law and (2) a continuous-time state feedback term. (C) 2012 Elsevier Ltd. All rights reserved.