Ok so I made it work. Here's what I did : Code: <Row Name="ICON_UNIT_NOMADICFAMILY" Atlas="ICON_ATLAS_UNITS" Index="0"/> <Row Name="ICON_UNIT_NOMADICFAMILY_PORTRAIT" Atlas="ICON_ATLAS_UNIT_PORTRAITS" Index="0"/> The first line I already had. It was used in the city menu to display that little "settler flag". The second line I found in a mod template. It's used to display the "bearded guy with a walking stick" portrait when I select my unit in the world. What I still don't understand, though, is how the system detected that "ICON_UNIT_NOMADIC_PORTRAIT" should be used for that unit. I didn't link it anywhere, and it just worked.