Xubuntu - Change Icon of a program / launcher on the desktop

You have some icons on your desktop you want to change?








You can right-click on it but there is no "change icon" selection.

Ok. Right-click it again.
Choose "Properties".

On the left there is a Icon.
Click it!

Now you can change the icon.

(I was looking everywhere until I find this. Now (because I know) I think it's so easy!)