  We report on a study of GS 1826--238 using all available {\it RXTE}
observations, concentrating on the behavior of the hard X-rays during type-I
bursts. We find a hard X-ray shortage at 30--50 keV promoted by the shower of
soft X-rays coming from type-I bursts. This shortage happens with a time delay
after the peak of the soft flux of 3.6 $\pm$ 1.2 seconds.The behavior of hard
X-rays during bursts indicates cooling and reheating of the corona, during
which a large amount of energy is required. We speculate that this energy
originates from the feedback of the type-I bursts to the accretion process,
resulting in a rapid temporary increase of the accretion rate.
