diff --git a/wp-admin/includes/schema.php b/wp-admin/includes/schema.php
index bb1c33d861..f643740628 100644
--- a/wp-admin/includes/schema.php
+++ b/wp-admin/includes/schema.php
@@ -82,7 +82,6 @@ CREATE TABLE $wpdb->links (
   link_name varchar(255) NOT NULL default '',
   link_image varchar(255) NOT NULL default '',
   link_target varchar(25) NOT NULL default '',
-  link_category bigint(20) NOT NULL default '0',
   link_description varchar(255) NOT NULL default '',
   link_visible varchar(20) NOT NULL default 'Y',
   link_owner bigint(20) unsigned NOT NULL default '1',
@@ -120,7 +119,6 @@ CREATE TABLE $wpdb->posts (
   post_date_gmt datetime NOT NULL default '0000-00-00 00:00:00',
   post_content longtext NOT NULL,
   post_title text NOT NULL,
-  post_category int(4) NOT NULL default '0',
   post_excerpt text NOT NULL,
   post_status varchar(20) NOT NULL default 'publish',
   comment_status varchar(20) NOT NULL default 'open',