Hot star wind mass-loss rates depend on the abundance of individual elements .
This dependence is usually accounted for assuming scaled solar chemical composition .
However , this approach may not be justified in evolved rotating stars .
The rotational mixing brings CNO-processed material to the stellar surface , increasing the abundance of nitrogen at the expense of carbon and oxygen , which potentially influences the mass-loss rates .
We study the influence of the modified chemical composition resulting from the rotational mixing on the wind parameters , particularly the wind mass-loss rates .
We use our NLTE wind code to predict the wind structure and compare the calculated wind mass-loss rate for the case of scaled solar chemical composition and the composition affected by the CNO cycle .
We show that for a higher mass-fraction of heavier elements Z / Z _ { \odot } \gtrsim 0.1 the change of chemical composition from the scaled solar to the CNO-processed scaled solar composition does not significantly affect the wind mass-loss rates .
The missing line force caused by carbon and oxygen is compensated for by nitrogen line force .
However , for a very low-mass fraction of heavier elements Z / Z _ { \odot } \lesssim 0.1 the rotational mixing significantly affects the wind mass-loss rates .
Moreover , the decrease of the mass-loss rate with metallicity is stronger at such low metallicities .
We study the relevance of the wind momentum-luminosity relationship for different metallicities and show that for a metallicity Z / Z _ { \odot } \lesssim 0.1 the relationship displays a large scatter , which depreciates the use of this relationship at the lowest metallicities .