The iron abundance in the helium star HD\,144941 has been measured from ultraviolet \ion{Fe}{iii} lines. It is $1.9\pm0.2$ dex below solar and confirms the low metallicity ($Z=0.0003$) previously determined from measurements of CNO and other light elements. The result is important because the low CNO metallicity must be reflected in the iron-group elements in order to explain why HD\,144941 does not show pulsations.