diff --git a/src/Form/IndexProcessorsForm.php b/src/Form/IndexProcessorsForm.php
index 30caed6..42e6234 100644
--- a/src/Form/IndexProcessorsForm.php
+++ b/src/Form/IndexProcessorsForm.php
@@ -272,6 +272,7 @@ class IndexProcessorsForm extends EntityForm {
         $processor_form_state = new SubFormState($form_state, array('processors', $processor_id, 'settings'));
         $processor->submitConfigurationForm($form['settings'][$processor_id], $processor_form_state);
         $new_settings[$processor_id]['settings'] = $processor->getConfiguration();
+        $new_settings[$processor_id]['settings'] += array('index' => $this->entity);
       }
       if (!empty($processor_values['weights'])) {
         $new_settings[$processor_id]['settings']['weights'] = $processor_values['weights'];