If statement inside an if statement dilemma

I have the following code, but I have no idea what I'm doing wrong. Any idea how to fix this? Thanks in advance!

<?php if($testing = series_get_meta('code_name')) { 
if ($testing == 'Pre1';) 
{
echo "Pre1";
} elseif ($testing == 'Gem2';) {
echo "Gem2";
} elseif ($testing == 'Remi1';) {
echo "Remi1";
} else {
echo "Default";
} } ?>