diff --git a/reflex/app.py b/reflex/app.py
index b22dd461d..549b61ff7 100644
--- a/reflex/app.py
+++ b/reflex/app.py
@@ -651,7 +651,7 @@ class App(MiddlewareMixin, LifespanMixin):
         """
         console.deprecate(
             feature_name="App.add_custom_404_page",
-            reason="Use App.add_page(component, route=rx.constants.Page404.SLUG) instead.",
+            reason='Use App.add_page(component, route="/404") instead.',
             deprecation_version="0.6.7",
             removal_version="0.7.0",
         )