diff --git a/bundles/content.rst b/bundles/content.rst
index b78e54f1..b9667016 100644
--- a/bundles/content.rst
+++ b/bundles/content.rst
@@ -24,8 +24,8 @@ The configuration key for this bundle is ``symfony_cmf_content``
             content_basepath:     /cms/content
             static_basepath:      /cms/content/static
             use_sonata_admin:     auto
-            multilang:
+            multilang:                # the whole multilang section is optionnal
                 admin_class:          ~
                 document_class:       ~
                 use_sonata_admin:     auto
-                locales:              []
+                locales:              [] # if you use multilang, you have to define at least one locale
diff --git a/bundles/menu.rst b/bundles/menu.rst
index aa1ccbd6..89fed40d 100644
--- a/bundles/menu.rst
+++ b/bundles/menu.rst
@@ -38,11 +38,11 @@ The values are:
             route_name:           ~ # cmf routes are created by content instead of name
             content_basepath:     ~ # defaults to symfony_cmf_core.content_basepath
             use_sonata_admin:     auto # use true/false to force using / not using sonata admin
-            multilang:
+            multilang:                # the whole multilang section is optionnal
                 use_sonata_admin:     auto # use true/false to force using / not using sonata admin
                 admin_class:          ~
                 document_class:       ~
-                locales:              []
+                locales:              [] # if you use multilang, you have to define at least one locale
 
 If you want to render the menu from twig, make sure you have not disabled twig
 in the ``knp_menu`` configuration section.