diff --git a/book/doctrine.rst b/book/doctrine.rst
index 63c15079822..ba6cf3617b1 100644
--- a/book/doctrine.rst
+++ b/book/doctrine.rst
@@ -951,8 +951,6 @@ To relate the ``Category`` and ``Product`` entities, start by creating a
                 products:
                     targetEntity: Product
                     mappedBy: category
-            # don't forget to init the collection in the __construct() method
-            # of the entity
 
     .. code-block:: xml