diff --git a/doc/deprecated.rst b/doc/deprecated.rst
index b624b569628..a5771ef4ec1 100644
--- a/doc/deprecated.rst
+++ b/doc/deprecated.rst
@@ -5,5 +5,8 @@ This document lists deprecated features in Twig 3.x. Deprecated features are
 kept for backward compatibility and removed in the next major release (a
 feature that was deprecated in Twig 3.x is removed in Twig 4.0).
 
-The `twig_test_iterable` function is deprecated; use the native `is_iterable`
-instead.
+Functions
+---------
+
+ * The `twig_test_iterable` function is deprecated; use the native
+   `is_iterable` instead.