diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 0f9b7daafc..3ce07432ba 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -248,7 +248,7 @@ function update_option($option_name, $newvalue) {
 	$option_name = $wpdb->escape($option_name);
 	$wpdb->query("UPDATE $wpdb->options SET option_value = '$newvalue' WHERE option_name = '$option_name'");
 	if ( $wpdb->rows_affected == 1 ) {
-		do_action("update_option_{$option_name}", array('old'=>$oldvalue, 'new'=>$_newvalue));
+		do_action("update_option_{$option_name}", $oldvalue, $_newvalue);
 		return true;
 	}
 	return false;