Trouble MySql - MySqli

I decided to start switching from mysql to mysqli in an already existing website of mine. So for the next couple days I will be sorting through a lot of code.

My first attempt is this snippet. I already have the connection in an included file, so please keep that in mind.

This code is showing no results at all.

<?php
if($emQuery = mysqli_query($con, "SELECT * FROM employees ORDER BY 'fullname' DESC LIMIT 50")){

$emNum = mysqli_num_rows($emQuery);

if($emNum > 0){

    while($emArray = mysqli_fetch_array($emQuery)){

        echo($emArray['fullname'].'<br />');

}

}else{

    echo('There are no employees to list. Start by adding a new employee.');

}
}

?>