diff --git a/src/Form/FillPdfFormForm.php b/src/Form/FillPdfFormForm.php
index 4ed4b71bac459bc9d308df9456b407d2b89116c0..5673eb315c193f1199592a49ba2b3756eb42d221 100644
--- a/src/Form/FillPdfFormForm.php
+++ b/src/Form/FillPdfFormForm.php
@@ -582,7 +582,7 @@ class FillPdfFormForm extends ContentEntityForm {
     // if not matching the default entity type.
     $default_entity_type = $form_state->getValue('default_entity_type');
     $default_entity_id = ($default_entity_type == $form['default_entity_id']['#target_type']) ? $form_state->getValue('default_entity_id') : NULL;
-    $entity->set('default_entity_type', $default_entity_type)
+    return $entity->set('default_entity_type', $default_entity_type)
       ->set('default_entity_id', $default_entity_id)
       ->save();
   }