diff --git a/test/lisp/emacs-lisp/hierarchy-tests.el b/test/lisp/emacs-lisp/hierarchy-tests.el
index d83460a2baa..97a0f7ba52c 100644
--- a/test/lisp/emacs-lisp/hierarchy-tests.el
+++ b/test/lisp/emacs-lisp/hierarchy-tests.el
@@ -689,7 +689,7 @@ and then create a list of the number plus 0.0–0.9."
                       (190.5 '191)
                       (191 '192))))
         (hierarchy (hierarchy-new)))
-    (hierarchy-add-trees hierarchy '(191 190.5) parentfn
+    (hierarchy-add-trees hierarchy '(190 190.5) parentfn
                          #'hierarchy-examples-delayed--childrenfn nil t)
     (should (equal (hierarchy-roots hierarchy) '(192)))
     (should (equal (hierarchy-children hierarchy '192) '(191)))