diff --git a/app/models/topic.rb b/app/models/topic.rb
index 77f2e0afd75..0787d52734c 100644
--- a/app/models/topic.rb
+++ b/app/models/topic.rb
@@ -552,7 +552,7 @@ class Topic < ActiveRecord::Base
     if new_post.present?
       # If we are moving posts, we want to insert the moderator post where the previous posts were
       # in the stream, not at the end.
-      new_post.update_attributes(post_number: opts[:post_number], sort_order: opts[:post_number]) if opts[:post_number].present?
+      new_post.update_attributes!(post_number: opts[:post_number], sort_order: opts[:post_number]) if opts[:post_number].present?
 
       # Grab any links that are present
       TopicLink.extract_from(new_post)