Incorrect default date

[code:1:96fbe036fd]ALTER TABLE `wp_posts` CHANGE `post_date` `post_date` DATETIME NOT NULL DEFAULT ‘1970-01-01 00:00:00’, CHANGE `post_date_gmt` `post_date_gmt` DATETIME NOT NULL DEFAULT ‘1970-01-01 00:00:00’, CHANGE `post_modified` `post_modified` DATETIME NOT NULL DEFAULT ‘1970-01-01 00:00:00’, CHANGE `post_modified_gmt` `post_modified_gmt` DATETIME NOT NULL DEFAULT ‘1970-01-01 00:00:00’;
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