diff --git a/boards/models/post/__init__.py b/boards/models/post/__init__.py
--- a/boards/models/post/__init__.py
+++ b/boards/models/post/__init__.py
@@ -115,12 +115,11 @@ class PostManager(models.Manager):
             thread.bump()
             thread.save()
 
+        post.build_url()
         post.connect_replies()
         post.connect_threads(threads)
         post.connect_notifications()
 
-        post.build_url()
-
         return post
 
     def delete_posts_by_ip(self, ip):
@@ -229,7 +228,15 @@ class Post(models.Model, Viewable):
         return self.get_thread().get_opening_post_id() == self.id
 
     def get_absolute_url(self):
-        return self.url
+        if self.url:
+            return self.url
+        else:
+            opening_id = self.get_thread().get_opening_post_id()
+            post_url = reverse('thread', kwargs={'post_id': opening_id})
+            if self.id != opening_id:
+                post_url += '#' + str(self.id)
+            return post_url
+
 
     def get_thread(self):
         return self.thread
@@ -341,12 +348,7 @@ class Post(models.Model, Viewable):
                     pass
 
     def build_url(self):
-        thread = self.get_thread()
-        opening_id = thread.get_opening_post_id()
-        post_url = reverse('thread', kwargs={'post_id': opening_id})
-        if self.id != opening_id:
-            post_url += '#' + str(self.id)
-        self.url = post_url
+        self.url = self.get_absolute_url()
         self.save(update_fields=['url'])
 
     def save(self, force_insert=False, force_update=False, using=None,