The self-correcting wind tunnel has attracted considerable interest in recent years as a concept for achieving minimum wall interference in a wind tunnel. Sears, et al., have presented an authoritative account which is recommended to the reader. Among their important conclusions is that a perforated wind tunnel wall (with control of the pressures in subdivided plenum chambers) is superior to control of impermeable, flexible walls such as suggested by Chevallier and Goodyer. In Reference 2 and 3 and the discussion in Reference 1 it is assumed that the impermeable, flexible wall is deformed into an a priori determined shape of fixed magnitude. The selection of wall shape function and its magnitude is made so as to minimise wind tunnel wall interference. In the present paper this concept is broadened to allow at least the magnitude of the wall shape to vary with flow conditions, e.g. flow dynamic pressure. More generally the shape function might vary as well. As will be shown there are advantages to such a compliant wall concept.