Damaged 16" Comets

Hi everyone, looking for some advice. I recently bought 4x second hand 16" Comet alloys for my Fabia. 3 wheels are mint with the 4th one having a gouge in one of the 'spokes', but in the thickest part of the alloy. The main gouge is about 40mm long x 6mm wide x 2mm deep. I have painted it, so it's not so noticeable, should I be worried and get it repaired or just ignore it. The wheel is otherwise in excellent condition, I don't do many miles and mostly local.