diff --git a/core/modules/aggregator/aggregator.admin.inc b/core/modules/aggregator/aggregator.admin.inc
index 4189f7c..1ccba6e 100644
--- a/core/modules/aggregator/aggregator.admin.inc
+++ b/core/modules/aggregator/aggregator.admin.inc
@@ -355,8 +355,8 @@ function aggregator_admin_form($form, $form_state) {
   }
 
   // Store definitions and managers so we can access them later.
-  $form['#definitions'] = $definitions;
-  $form['#managers'] = $managers;
+  $form_state['definitions'] = $definitions;
+  $form_state['managers'] = $managers;
 
   // Only show basic configuration if there are actually options.
   $basic_conf = array();
@@ -414,9 +414,9 @@ function aggregator_admin_form($form, $form_state) {
 function aggregator_admin_form_submit($form, &$form_state) {
   $config = config('aggregator.settings');
   // Let active processors save their settings.
-  foreach ($form['#definitions']['processor'] as $id => $definition) {
+  foreach ($form_state['definitions']['processor'] as $id => $definition) {
     if (in_array($id, $config->get('processors'))) {
-      $form['#managers']['processor']->createInstance($id)->settingsSubmit($form, $form_state);
+      $form_state['managers']['processor']->createInstance($id)->settingsSubmit($form, $form_state);
     }
   }