diff --git a/includes/update.inc b/includes/update.inc
index a17161c..d6bfa25 100644
--- a/includes/update.inc
+++ b/includes/update.inc
@@ -82,6 +82,7 @@ function update_prepare_d7_bootstrap() {
   // Allow the bootstrap to proceed even if a Drupal 6 settings.php file is
   // still being used.
   include_once DRUPAL_ROOT . '/includes/install.inc';
+  drupal_save_session(FALSE);
   drupal_bootstrap(DRUPAL_BOOTSTRAP_CONFIGURATION);
   global $databases, $db_url, $db_prefix, $update_rewrite_settings;
   if (empty($databases) && !empty($db_url)) {