diff --git a/src/LiveComponent/doc/index.rst b/src/LiveComponent/doc/index.rst
index a7ec0652a5c..1824273c6ac 100644
--- a/src/LiveComponent/doc/index.rst
+++ b/src/LiveComponent/doc/index.rst
@@ -525,6 +525,17 @@ Doctrine entity objects are a special case for ``LiveProp``::
         public Post $post;
     }
 
+.. note::
+
+    If you're using entities as ``LiveProp`` and having a ``mount`` method declared in
+    your component, it's required to manually hydrate the corresponding prop::
+
+    public function mount(Post $post)
+    {
+        $this->post = $post;
+        // .. doing something
+    }
+
 If the ``Post`` object is persisted, its dehydrated to the entity's ``id`` and then
 hydrated back by querying the database. If the object is unpersisted, it's dehydrated
 to an empty array, then hydrated back by creating an *empty* object