Błąd tworzenia tablicy, #1075 Opcje

[saperek25]

Witam!Oto kod zapytania:

[SQL] pobierz, plaintext 
CREATE TABLE 	`bloglm_config` (
	`config_id` int(11) NOT NULL AUTO_INCREMENT,
	`config_name` varchar(5) collate utf8_unicode_ci NOT NULL,
	`config_value` varchar(255) collate utf8_unicode_ci
	) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
	AUTO_INCREMENT=15;
[SQL] pobierz, plaintext 

i wyskakuje:

#1075 - Incorrect table definition; there can be only one auto column and it must be defined as a key