diff --git a/polymorphic/admin/parentadmin.py b/polymorphic/admin/parentadmin.py
index d021522d..f4ee9d44 100644
--- a/polymorphic/admin/parentadmin.py
+++ b/polymorphic/admin/parentadmin.py
@@ -344,6 +344,7 @@ def render_add_type_form(self, request, context, form_url=""):
                 "opts": opts,
                 "add": True,
                 "save_on_top": self.save_on_top,
+                **self.admin_site.each_context(request),
             }
         )
 
@@ -355,7 +356,7 @@ def render_add_type_form(self, request, context, form_url=""):
         ]
 
         request.current_app = self.admin_site.name
-        return TemplateResponse(request, templates, context)
+        return self.admin_site.admin_view(TemplateResponse)(request, templates, context)
 
     @property
     def change_list_template(self):