diff --git a/layouts/partials/menu-hugo.html b/layouts/partials/menu-hugo.html
index b15d1266b..b3265ff74 100644
--- a/layouts/partials/menu-hugo.html
+++ b/layouts/partials/menu-hugo.html
@@ -15,7 +15,7 @@
 {{ define "book-section-children" }}{{/* (dict "Section" .Section "CurrentPage" .CurrentPage) */}}
   <ol>
 
-    {{ range (where .Section.Pages "Params.bookhidden" "ne" true) }}
+    {{ range sort (where .Section.Pages "Params.bookhidden" "ne" true) }}
       {{ if .IsSection }}
         <details>
         <summary>