diff --git a/django/contrib/redirects/admin.py b/django/contrib/redirects/admin.py
index 39400ad265..beeca84086 100644
--- a/django/contrib/redirects/admin.py
+++ b/django/contrib/redirects/admin.py
@@ -7,4 +7,3 @@ class RedirectAdmin(admin.ModelAdmin):
     list_display = ("old_path", "new_path")
     list_filter = ("site",)
     search_fields = ("old_path", "new_path")
-    radio_fields = {"site": admin.VERTICAL}