diff --git a/wp-admin/upgrade-schema.php b/wp-admin/upgrade-schema.php
index 3bb399a37a..fb74538467 100644
--- a/wp-admin/upgrade-schema.php
+++ b/wp-admin/upgrade-schema.php
@@ -118,7 +118,7 @@ CREATE TABLE $wpdb->posts (
   comment_count bigint(20) NOT NULL default '0',
   PRIMARY KEY  (ID),
   KEY post_name (post_name),
-  KEY type_status_date (post_type, post_status, post_date)
+  KEY type_status_date (post_type, post_status, post_date, ID)
 );
 CREATE TABLE $wpdb->users (
   ID bigint(20) unsigned NOT NULL auto_increment,