diff --git a/documentation/README b/documentation/README
index 123812dcac..6f6a8ec842 100644
--- a/documentation/README
+++ b/documentation/README
@@ -175,17 +175,18 @@ The layout of the Yocto Project manuals is organized as follows
     Book
       Chapter
         Section
-          Section
-            Section
+          Subsection
+            Subsubsection
+              Subsubsubsection
 
-Here are the heading styles defined in Sphinx:
+Here are the heading styles that we use in the manuals:
 
-    Book              => overline ===
-      Chapter         => overline ***
-        Section       => ====
-          Section     => ----
-            Section   => ^^^^
-              Section => """" or ~~~~
+    Book                       => overline ===
+      Chapter                  => overline ***
+        Section                => ====
+          Subsection           => ----
+            Subsubsection      => ~~~~
+              Subsubsubsection => ^^^^
 
 With this proposal, we preserve the same TOCs between Sphinx and Docbook.