diff --git a/Documentation/doc-guide/kernel-doc.rst b/Documentation/doc-guide/kernel-doc.rst
index 1ddfe35c0e78..c6c329708d8a 100644
--- a/Documentation/doc-guide/kernel-doc.rst
+++ b/Documentation/doc-guide/kernel-doc.rst
@@ -286,8 +286,17 @@ on a line of their own, like all other kernel-doc comments::
          * Here, the member description may contain several paragraphs.
          */
         int baz;
-        /** @foobar: Single line description. */
-        int foobar;
+        union {
+                /** @foobar: Single line description. */
+                int foobar;
+        };
+        /** @bar2: Description for struct @bar2 inside @foo */
+        struct {
+                /**
+                 * @bar2.barbar: Description for @barbar inside @foo.bar2
+                 */
+                int barbar;
+        } bar2;
   };
 
 Typedef documentation