diff --git a/controller/upload_file.rst b/controller/upload_file.rst
index 886c772d98a..2d6ad260491 100644
--- a/controller/upload_file.rst
+++ b/controller/upload_file.rst
@@ -222,9 +222,13 @@ You can use the following code to link to the PDF brochure of a product:
use Symfony\Component\HttpFoundation\File\File;
// ...
- $product->setBrochureFilename(
- new File($this->getParameter('brochures_directory').'/'.$product->getBrochureFilename())
- );
+ if (!$form->isSubmitted() && $product->getBrochureFilename()) {
+ $form->setData(['brochure' => new File($this->getParameter('brochures_directory').'/'.$product->getBrochureFilename())]);
+ }
+
+ if ($form->isSubmitted() && $form->isValid()) {
+ // ...
+ }
Creating an Uploader Service
----------------------------
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