diff --git a/README.md b/README.md
index 8b9b1952..a5b3c6b8 100644
--- a/README.md
+++ b/README.md
@@ -178,6 +178,7 @@ for ideas of how to customize the presentation.
 The breadcrumb, collection, section, and page links are sufficient to browse any site,
 so you can safely disable the menu.
 However, for sites with only a couple handfuls of sections and pages at the root level,
+and without nested sections,
 the menu alone can be sufficient for all navigation.
 See the [menu navigation only](#menu-navigation-only) section for how to do that.