diff --git a/docs/en/reference/yaml-mapping.rst b/docs/en/reference/yaml-mapping.rst
index e929306e0..dea597984 100644
--- a/docs/en/reference/yaml-mapping.rst
+++ b/docs/en/reference/yaml-mapping.rst
@@ -100,6 +100,7 @@ of several common elements:
           joinColumn:
             name: address_id
             referencedColumnName: id
+            onDelete: CASCADE
       oneToMany:
         phonenumbers:
           targetEntity: Phonenumber