diff --git a/en/reference/association-mapping.rst b/en/reference/association-mapping.rst
index aed143815..fdd9259f7 100644
--- a/en/reference/association-mapping.rst
+++ b/en/reference/association-mapping.rst
@@ -606,7 +606,7 @@ the join columns enforces the one-to-many cardinality. The
 following example sets up such a unidirectional one-to-many
 association:
 
-.. configuration-block
+.. configuration-block::
 
     .. code-block:: php