diff --git a/lisp/which-key.el b/lisp/which-key.el
index e9567d262c6..33fa67e9bac 100644
--- a/lisp/which-key.el
+++ b/lisp/which-key.el
@@ -128,6 +128,11 @@ which-key-dont-use-unicode
   "If non-nil, don't use any unicode characters in default setup.
 For affected settings, see `which-key-replacement-alist', `which-key-ellipsis'
 `which-key-separator'."
+  :set (lambda (sym val)
+         (prog1 (custom-set-default sym val)
+           (dolist (sym '(which-key-separator
+                          which-key-ellipsis))
+             (custom-set-default sym (custom-reevaluate-setting sym)))))
   :type 'boolean
   :package-version "1.0" :version "30.1")