diff --git a/UPGRADE.md b/UPGRADE.md
index b55cd353..7bf363bf 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -18,7 +18,7 @@
    +   - { resource: '@SyliusInvoicingPlugin/config/config.yaml' }
    ```
    
-   And the routes configuration paths:
+   The routes configuration paths:
    ```diff
    sylius_invoicing_plugin_admin:
    -   resource: "@SyliusInvoicingPlugin/Resources/config/app/routing/admin_invoicing.yml"
diff --git a/docs/legacy_installation.md b/docs/legacy_installation.md
index 90a475a2..352f7553 100644
--- a/docs/legacy_installation.md
+++ b/docs/legacy_installation.md
@@ -5,13 +5,13 @@
     ```bash
     composer require sylius/invoicing-plugin
     ```
-    
-1. Add plugin class to your `AppKernel`:
+
+1. Add plugin class and other required bundles to your `config/bundles.php`:
 
     ```php
     $bundles = [
-        new \Knp\Bundle\SnappyBundle\KnpSnappyBundle(),
-        new \Sylius\InvoicingPlugin\SyliusInvoicingPlugin(),
+        Knp\Bundle\SnappyBundle\KnpSnappyBundle::class => ['all' => true],
+        Sylius\InvoicingPlugin\SyliusInvoicingPlugin::class => ['all' => true],
     ];
     ```