diff --git a/app/Http/Resources/FormResource.php b/app/Http/Resources/FormResource.php
index fe5e504..60dfcf6 100644
--- a/app/Http/Resources/FormResource.php
+++ b/app/Http/Resources/FormResource.php
@@ -45,8 +45,8 @@ class FormResource extends JsonResource
             'visibility' => $this->visibility,
             'notification_emails' => $this->notification_emails,
             'slack_webhook_url' => $this->slack_webhook_url,
-            'removed_properties' => $this->removed_properties, 
-            'last_edited_human' => $this->updated_at->diffForHumans()
+            'removed_properties' => $this->removed_properties,
+            'last_edited_human' => $this->updated_at?->diffForHumans()
         ] : [];
 
         $baseData = $this->getFilteredFormData(parent::toArray($request), $this->userIsFormOwner());