aria-label on span

Hello,

Can I use aria-label like this:

<span class='icon-download2' aria-label='Preuzimanje'>

I've got this warning while checking: 
https://validator.w3.org/nu/?showoutline=yes&doc=https%3A%2F%2Fwww.programiranje.co.rs%2F


-- 
Best Regards
Dejan Dozet
www.programiranje.co.rs <https://www.programiranje.co.rs>
dejan.dozet@programiranje.co.rs <mailto:dejan.dozet@programiranje.co.rs>
063483494 <tel:063483494>