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-rw-r--r--includes/form.inc5
1 files changed, 3 insertions, 2 deletions
diff --git a/includes/form.inc b/includes/form.inc
index 8ae8065a2..8ca048a90 100644
--- a/includes/form.inc
+++ b/includes/form.inc
@@ -727,8 +727,9 @@ function drupal_retrieve_form($form_id, &$form_state) {
// Record the filepath of the include file containing the original form, so
// the form builder callbacks can be loaded when the form is being rebuilt
// from cache on a different path (such as 'system/ajax'). See
- // form_get_cache().
- // $menu_get_item() is not available during installation.
+ // form_get_cache(). Don't do this in maintenance mode as Drupal may not be
+ // fully bootstrapped (i.e. during installation) in which case
+ // menu_get_item() is not available.
if (!isset($form_state['build_info']['files']['menu']) && !defined('MAINTENANCE_MODE')) {
$item = menu_get_item();
if (!empty($item['include_file'])) {