Coulomb Effects and theO14β-Decay Matrix Element

The change of the Fermi matrix element of the $\beta$ decay of ${\mathrm{O}}^{14}$ to the first excited state of ${\mathrm{N}}^{14}$ from its value $\sqrt{2}$ due to Coulomb corrections is re-estimated. It is shown, that for pure $1p$-shell states the reduction is between 0.02 and 0.20%. Configuration mixing in the $1p$ shell may increase these figures considerably.