  We investigate the residual effect of lambda-proton strong interactions in pp
correlations with one proton from lambda decays. It is found that the residual
correlation is about 10% of the lambda-proton correlation strength, and has a
broad distribution centered around q~40 MeV/c. The residual correlation cannot
explain the observed structure on the tail of the recently measured pp
correlation function in central Pb+Pb collisions by NA49 at the SPS.
