  It is shown that the free propagator of an angular, i.e. compact, field with
zero lagrangian mass acquires a nonzero propagator mass $\omega$ (`kinematical'
mass generation). To demonstrate this effect the free propagator of the
goldstone boson in an O(2) model with spontaneous symmetry breaking is
calculated. It is shown that this propagator is massive, the mass $\omega$
being a function of the scalar `condensate' ${\bar\phi}$.
