diff --git a/reference/forms/types/form.rst b/reference/forms/types/form.rst
index b51fe597078..01e2bc332da 100644
--- a/reference/forms/types/form.rst
+++ b/reference/forms/types/form.rst
@@ -9,6 +9,8 @@ See :class:`Symfony\\Component\\Form\\Extension\\Core\\Type\\FormType`.
 The ``form`` type predefines a couple of options that are then available
 on all fields.
 
+.. include:: /reference/forms/types/options/compound.rst.inc
+
 .. include:: /reference/forms/types/options/data.rst.inc
 
 .. include:: /reference/forms/types/options/required.rst.inc
diff --git a/reference/forms/types/options/compound.rst.inc b/reference/forms/types/options/compound.rst.inc
new file mode 100644
index 00000000000..805294b48c3
--- /dev/null
+++ b/reference/forms/types/options/compound.rst.inc
@@ -0,0 +1,8 @@
+compound
+~~~~~~~~
+
+**type**: ``boolean``
+
+This option specifies if a form is compound. This is independent of whether the
+form actually has children. A form can be compound but don't have any children
+at all (e.g. an empty collection form).