diff --git a/django/contrib/admin/options.py b/django/contrib/admin/options.py
index 787f856..b6258f3 100644
--- a/django/contrib/admin/options.py
+++ b/django/contrib/admin/options.py
@@ -10,6 +10,7 @@ from django.contrib import messages
 from django.views.decorators.csrf import csrf_protect
 from django.core.exceptions import PermissionDenied, ValidationError
 from django.core.paginator import Paginator
+from django.core.urlresolvers import reverse
 from django.db import models, transaction, router
 from django.db.models.related import RelatedObject
 from django.db.models.fields import BLANK_CHOICE_DASH, FieldDoesNotExist
@@ -716,7 +717,7 @@ class ModelAdmin(BaseModelAdmin):
             "admin/change_form.html"
         ], context, current_app=self.admin_site.name)
 
-    def response_add(self, request, obj, post_url_continue='../%s/'):
+    def response_add(self, request, obj, post_url_continue=None):
         """
         Determines the HttpResponse for the add_view stage.
         """
@@ -728,9 +729,12 @@ class ModelAdmin(BaseModelAdmin):
         # the presence of keys in request.POST.
         if "_continue" in request.POST:
             self.message_user(request, msg + ' ' + _("You may edit it again below."))
+            if post_url_continue is None:
+                post_url_continue = reverse("admin:%s_%s_change" % (opts.app_label, opts.module_name), args=(pk_value,), current_app=self.admin_site.name)
+
             if "_popup" in request.POST:
                 post_url_continue += "?_popup=1"
-            return HttpResponseRedirect(post_url_continue % pk_value)
+            return HttpResponseRedirect(post_url_continue)
 
         if "_popup" in request.POST:
             return HttpResponse('<script type="text/javascript">opener.dismissAddAnotherPopup(window, "%s", "%s");</script>' % \