diff --git a/basis/help/html/html.factor b/basis/help/html/html.factor
index 84f708a687..6db6bc3535 100644
--- a/basis/help/html/html.factor
+++ b/basis/help/html/html.factor
@@ -73,7 +73,7 @@ M: topic url-of topic>filename ;
     dup topic>filename utf8 [ help>html write-xml ] with-file-writer ;
 
 : all-vocabs-really ( -- seq )
-    all-vocabs >hashtable f over delete-at no-roots remove-redundant-prefixes ;
+    all-vocabs-recursive >hashtable f over delete-at no-roots remove-redundant-prefixes ;
 
 : all-topics ( -- topics )
     [