จาก Code นี้ ต้องการทำแบบฟอร์มบันทึกข้อมูลลง database แต่พอ run แล้ว error แบบนี้แก้ตรงไหนครับ

Error in query : INSERT INTO login (username, password, prefix, firstname, lastname,) VALUES ('', '', '', '', '',)You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') VALUES ('', '', '', '', '',)' at line 2

<meta charset="UTF-8" />
<?php
include('Connections/connections.php');
$username = $_POST['username'];
$password = $_POST['password']; // กำหนด password ปกติ
//$m_password = md5($_POST['password']);// กำหนด password แบบใส่รหัส md5
$prefix = $_POST['prefix'];
$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];

$sql ="INSERT INTO login
		(username,  password, prefix, firstname, lastname,)
		VALUES
		('$username', '$password', '$prefix', '$firstname', '$lastname',)";
		$result = mysql_db_query($database_connections, $sql) or die("Error in query : $sql" .mysql_error());
		mysql_close();
		if($result){
			echo "<script>";
			echo "alert('Register SuccessFully');";
			echo "window.location ='form_insert2.php'; ";
			echo "</script>";
		} else {
			echo "<script>";
			echo "alert('ERROR!');";
			echo "window.location ='form_insert2.php'; ";
			echo "</script>";
		}
?>