diff --git a/basis/vocabs/hierarchy/hierarchy-docs.factor b/basis/vocabs/hierarchy/hierarchy-docs.factor
index 519f3478fe..79fdad3df8 100644
--- a/basis/vocabs/hierarchy/hierarchy-docs.factor
+++ b/basis/vocabs/hierarchy/hierarchy-docs.factor
@@ -46,7 +46,7 @@ HELP: load-all
 
 HELP: load-from-root
 { $values
-    { "root" "a vocaulary root" } { "prefix" string }
+    { "root" "a vocabulary root" } { "prefix" string }
 }
 { $description "Attempts to load all of the vocabularies with a certain prefix from a vocabulary root." } ;