diff --git a/wp-admin/includes/schema.php b/wp-admin/includes/schema.php
index a9d7f72..27eede6 100644
--- a/wp-admin/includes/schema.php
+++ b/wp-admin/includes/schema.php
@@ -126,7 +126,8 @@ CREATE TABLE $wpdb->options (
   option_value longtext NOT NULL,
   autoload varchar(20) NOT NULL default 'yes',
   PRIMARY KEY  (option_id),
-  UNIQUE KEY option_name (option_name)
+  UNIQUE KEY option_name (option_name),
+  KEY autoload (autoload)
 ) $charset_collate;
 CREATE TABLE $wpdb->postmeta (
   meta_id bigint(20) unsigned NOT NULL auto_increment,