diff --git a/components/config/definition.rst b/components/config/definition.rst
index e7654c0c14c..c383fa5cd39 100644
--- a/components/config/definition.rst
+++ b/components/config/definition.rst
@@ -736,6 +736,7 @@ the following ways:
 - ``ifTrue()``
 - ``ifString()``
 - ``ifNull()``
+- ``ifEmpty()`` (since Symfony 3.2)
 - ``ifArray()``
 - ``ifInArray()``
 - ``ifNotInArray()``