diff --git a/boards/rss.py b/boards/rss.py
--- a/boards/rss.py
+++ b/boards/rss.py
@@ -57,10 +57,10 @@ class ThreadPostsFeed(Feed):
     description_template = 'boards/rss/post.html'
 
     def items(self, obj):
-        return get_object_or_404(Post, id=obj).thread_new.get_replies()
+        return obj.thread_new.get_replies()
 
     def get_object(self, request, post_id):
-        return post_id
+        return get_object_or_404(Post, id=post_id)
 
     def item_title(self, item):
         return item.title
@@ -76,4 +76,4 @@ class ThreadPostsFeed(Feed):
         return item.pub_time
 
     def title(self, obj):
-        return get_object_or_404(Post, id=obj).title
+        return obj.title
diff --git a/boards/urls.py b/boards/urls.py
--- a/boards/urls.py
+++ b/boards/urls.py
@@ -38,7 +38,7 @@ urlpatterns = patterns('',
     # /boards/thread/
     url(r'^thread/(?P<post_id>\w+)/$', views.thread.ThreadView.as_view(),
         name='thread'),
-    url(r'^thread/(?P<post_id>\w+)/(?P<mode>\w+)/$', views.thread.ThreadView
+    url(r'^thread/(?P<post_id>\w+)/mode/(?P<mode>\w+)/$', views.thread.ThreadView
         .as_view(), name='thread_mode'),
 
     # /boards/post_admin/