How to amend household composition Brussels

Hello there! I have a quick question related to the household composition document for Brussels 1000. I accessed mine yesterday for some administrative stuff but noticed that it says that I am from "Dublin / Allemagne (Rép.féd.),".

Clearly this is wrong as I'm Irish (and my ID card rightfully reflects this). Is there a way to change this or does it matter? My Fiance is German and also registered at the address so maybe that's where the mix up came from?

Anyway sorry for the rambling just wanted to see if it's even necessary to change this!

Thanks a million in advance!

The only way to fix is to present your self at Brussels 1000 and ask them to fix it