  We calculate the magnetic form factor of the deuteron up to O(eP^4) in the
chiral EFT expansion of the electromagnetic current operator. The two LECs
which enter the two-body part of the isoscalar NN three-current operator are
fit to experimental data, and the resulting values are of natural size. The
O(eP^4) description of G_M agrees with data for momentum transfers Q^2 < 0.35
GeV^2.
