  In 1997 Diakonov, Petrov, and Polyakov, calculated the width of the exotic
baryon that they called $\Theta^{+}$. The prediction,
$\Gamma(\Theta^{+})\lesssim$ 15 MeV, has received considerable attention,
especially in light of the narrowness of the experimentally reported
$\Theta^{+}$ resonance. However, there is an arithmetic error in their work:
when corrected, the width estimate quoted in that paper should have been
$\lesssim$~30 MeV.
