  The leading perturbative contributions into the two-point gauge-invariant
correlator $Tr<gF(x)U(x,0)U(0,y)F(y)U(y,0)U(0,x)>$ are calculated at the
one-loop order. It is shown, that nonlocal condensate is nonzero at this order.
The relation with the renormalization properties of Wilson loops is discussed.
