diff --git a/src/Entity/FillPdfForm.php b/src/Entity/FillPdfForm.php
index 421aafc5db933b5f000e341b47f5d8b8d0b9f833..35e30c0fb84909cceb635676b59406e03167164e 100644
--- a/src/Entity/FillPdfForm.php
+++ b/src/Entity/FillPdfForm.php
@@ -44,6 +44,10 @@ class FillPdfForm extends ContentEntityBase implements FillPdfFormInterface {
       ->setDescription(t('The UUID of the FillPdfForm entity.'))
       ->setReadOnly(TRUE);
 
+    $fields['title'] = BaseFieldDefinition::create('string')
+      ->setLabel(t('Filename pattern'))
+      ->setDescription(t('The pattern to use for serving populated PDF files.'));
+
     $fields['file'] = BaseFieldDefinition::create('entity_reference')
       ->setLabel(t('The associated managed file.'))
       ->setDescription(t('The associated managed file.'))