PHP - $_POST angeblich leer

<form class="form-inline" method="POST" action="index.php">
    <input type="text" class="form-control" id="login-username" name="login-username" placeholder="Benutzername">
    <input type="password" class="form-control" id="login-password" name="login-password" placeholder="Passwort">
    <input type="submit" value="Anmelden" class="btn btn-default" />
</form>

<?php
if(isset($_POST['login-username'], $_POST['login-password'])) {
	echo 'TEST';
} else {
	print_r($_POST);
}

Echo '<pre>'; print_r(); Echo '</pre>';