Index: src/wp-includes/functions.php
===================================================================
--- src/wp-includes/functions.php	(revision 40894)
+++ src/wp-includes/functions.php	(working copy)
@@ -3295,7 +3295,7 @@
  * @access private
  */
 function _delete_option_fresh_site() {
-	update_option( 'fresh_site', 0 );
+	update_option( 'fresh_site', '0' );
 }