diff --git a/lisp/which-key.el b/lisp/which-key.el
index 91007ce4ada..8b78bfb2576 100644
--- a/lisp/which-key.el
+++ b/lisp/which-key.el
@@ -133,6 +133,7 @@ which-key-dont-use-unicode
          (mapc #'custom-reevaluate-setting
                '(which-key-separator
                  which-key-ellipsis)))
+  :initialize #'custom-initialize-changed
   :type 'boolean
   :package-version "1.0" :version "30.1")