diff --git a/controller/upload_file.rst b/controller/upload_file.rst
index b3dc2d6ffd0..6cf51cc25ef 100644
--- a/controller/upload_file.rst
+++ b/controller/upload_file.rst
@@ -286,7 +286,9 @@ Then, define a service for this class:
 
         # config/services.yaml
         services:
-            # ...
+            _defaults:
+                bind:
+                    string $targetDirectory: '%brochures_directory%'
 
             App\Service\FileUploader:
                 arguments: