diff --git a/update.php b/update.php
index 41f86fd..e679cc1 100644
--- a/update.php
+++ b/update.php
@@ -411,8 +411,9 @@ if (empty($op) && update_access_allowed()) {
   // $GLOBALS['module_list']['foo']['filename'] = 'path/to/foo.module';
   // to load modules like git deploy which alter system information.
   $module_list['system']['filename'] = 'modules/system/system.module';
-  module_list(TRUE, FALSE, FALSE, $module_list);
-  drupal_load('module', 'system');
+  foreach (module_list(TRUE, FALSE, FALSE, $module_list) as $module) {
+    drupal_load('module', $module);
+  }
 
   // Reset the module_implements() cache so that any new hook implementations
   // in updated code are picked up.