wz-select warning when using selected inside option

[renemichel]

I get this error when using wz-select:

Warning: Use the `defaultValue` or `value` props on <select> instead of setting `selected` on <option>.
          in option 
          in wz-select 

According to the examples, to set a selected option you have to use the prop selected like this:
<option selected value="something">Test</option>

But this way of selecting an option is logging a warning in the console.