diff --git a/UPGRADE-4.0.md b/UPGRADE-4.0.md
index 0cee61b0cf..8bd9ce3466 100644
--- a/UPGRADE-4.0.md
+++ b/UPGRADE-4.0.md
@@ -627,7 +627,7 @@ HttpKernel
        # ...
 
        # explicit commands registration
-       AppBundle\Command:
+       AppBundle\Command\:
            resource: '../../src/AppBundle/Command/*'
            tags: ['console.command']
    ```