diff --git a/doc/installation/xml-mapping.md b/doc/installation/xml-mapping.md
index 36abd2b..38cf6ca 100644
--- a/doc/installation/xml-mapping.md
+++ b/doc/installation/xml-mapping.md
@@ -13,8 +13,8 @@ doctrine:
                 mappings:
                     App:
                         ...
-                type: xml
-                dir: '%kernel.project_dir%/src/Resources/config/doctrine'
+                        type: xml
+                        dir: '%kernel.project_dir%/src/Resources/config/doctrine'
 ```
 
 Extend entities with parameters and methods using attributes and traits: