  The scalar mass is determined in the simplest scalar-fermion Yukawa-model in
the whole range of stability of the scalar potential. Two versions of the
Functional Renormalisation Group (FRG) equations are solved, where also
composite fermionic background is taken into account. The close agreement of
the results with previous studies taking into account exclusively the effect of
the scalar condensate, supports a rather small systematic truncation error of
FRG due to the omission of higher dimensional operators.
