ช่วยดูทีครับ #1068 - Multiple primary key defined

CREATE TABLE `tbl_member` (
`member_id` smallint(5) NOT NULL auto_increment PRIMARY KEY,
`member_name` varchar(60) NOT NULL,
`member_email` varchar(60) NOT NULL,
`member_login` varchar(15) NOT NULL,
`member_pwdl` varchar(15) NOT NULL,
`Status` enum('ADMIN','USER') NOT NULL default 'USER',
PRIMARY KEY (`member_id`),
UNIQUE KEY `member_login` (`member_login`)
) ENGINE=MyISAM AUTO_INCREMENT=3