  Results of our recent re-analysis of the electroweak contribution to the
relation between pole and running masses of top-quark within the Standard Model
is reviewed. We argue, that if vacuum of SM is stable, then there exists an
optimal value of renormalization group scale (IR-point), at which the radiative
corrections to the matching condition between parameters of Higgs sector and
pole masses is minimal or equal to zero. Within the available accuracy, we find
the IR-point to lie in an interval between value of Z-boson mass and twice the
value of W-boson mass. The value of scale is relevant for extraction of Higgs
self-coupling from cross-section as well as for construction of effective
Lagrangian.
