This document provides correction for three equations of ITU-T Recommendation G.1072, which was published in January 2020. The corrections are required to avoid undefined value for equation 10 and 13 in case the frame loss rate is set to 0. These changes do not affect the coefficient of the equations 10 and 13. In addition, a typo was found in the coefficient d_7 of equation 12, which is updated. Lastly, the equations 5, 10 and 13 are more consistent when referring to the encoding framerate in the updated version.