diff --git a/modules/civiremote_entity/src/Form/Control/FileArrayFactory.php b/modules/civiremote_entity/src/Form/Control/FileArrayFactory.php
index 224c33d..ec853a1 100644
--- a/modules/civiremote_entity/src/Form/Control/FileArrayFactory.php
+++ b/modules/civiremote_entity/src/Form/Control/FileArrayFactory.php
@@ -61,26 +61,30 @@ public function createFormArray(
       ] + BasicFormPropertiesFactory::createFieldProperties($definition, $formState),
     ];
 
-    if (($form['file']['#default_value'] ?? NULL) instanceof \stdClass
-      && is_string($form['file']['#default_value']->url ?? NULL)
-      && is_string($form['file']['#default_value']->filename ?? NULL)
-    ) {
-      $url = $form['file']['#default_value']->url;
-      $filename = $form['file']['#default_value']->filename;
-
-      $form['file']['#required'] = FALSE;
-
-      $form['link'] = [
-        '#type' => 'link',
-        '#title' => $filename,
-        '#url' => $this->civiCRMUrlManager->addRemoteUrl($url, $filename),
-        '#attributes' => ['target' => '_blank'],
-        '#prefix' => '<p>',
-        '#suffix' => '</p>',
-      ];
-
-      if (isset($form['file']['#states'])) {
-        $form['link']['#states'] = $form['file']['#states'];
+    if (isset($form['file']['#default_value'])) {
+      // If the default value was fetched from the temporary values, it should
+      // be an array. If it was fetched from the field definition, it should be
+      // an \stdClass.
+      /** @phpstan-var \stdClass|array<string, mixed> $defaultValue */
+      $defaultValue = $form['file']['#default_value'];
+      $url = $defaultValue->url ?? $defaultValue['url'] ?? NULL;
+      $filename = $defaultValue->filename ?? $defaultValue['filename'] ?? NULL;
+
+      if (is_string($url) && is_string($filename)) {
+        $form['file']['#required'] = FALSE;
+
+        $form['link'] = [
+          '#type' => 'link',
+          '#title' => $filename,
+          '#url' => $this->civiCRMUrlManager->addRemoteUrl($url, $filename),
+          '#attributes' => ['target' => '_blank'],
+          '#prefix' => '<p>',
+          '#suffix' => '</p>',
+        ];
+
+        if (isset($form['file']['#states'])) {
+          $form['link']['#states'] = $form['file']['#states'];
+        }
       }
     }