diff --git a/reference/configuration/framework.rst b/reference/configuration/framework.rst
index c9ecfa4800b..3daaab375c4 100644
--- a/reference/configuration/framework.rst
+++ b/reference/configuration/framework.rst
@@ -389,12 +389,15 @@ form
 enabled
 .......
 
-**type**: ``boolean`` **default**: ``false``
+**type**: ``boolean`` **default**: (see explanation below)
 
 Whether to enable the form services or not in the service container. If
 you don't use forms, setting this to ``false`` may increase your application's
 performance because less services will be loaded into the container.
 
+The default value is ``true`` when the project uses ``symfony/symfony`` as a
+dependency. Otherwise, it defaults to ``false``.
+
 This option will automatically be set to ``true`` when one of the child
 settings is configured.