I would like to know if it is possible to not print accents in capital letters that have been produced using the \MakeUppercase command.

I am using XeLaTeX, and the fontspec package in case this matters.

This is an example of a document:

```
\documentclass{article}
\usepackage{fontspec}
\setmainfont{Arial}
\begin{document}
    \MakeUppercase{Πλούταρχος}
 \end{document}

```

This will produce: 
[![ΠΛΟΎΤΑΡΧΟΣ](https://i.stack.imgur.com/i55Pn.png)](https://i.stack.imgur.com/i55Pn.png) instead of [![ΠΛΟΥΤΑΡΧΟΣ](https://i.stack.imgur.com/JTy5B.png)](https://i.stack.imgur.com/JTy5B.png)

Is it a font thing? Is there any alternative that would not print the accents?