diff --git a/lib/discourse.rb b/lib/discourse.rb
index 347171219ef..506bff4138b 100644
--- a/lib/discourse.rb
+++ b/lib/discourse.rb
@@ -201,8 +201,10 @@ module Discourse
     user ||= User.admins.real.order(:id).first
   end
 
+  SYSTEM_USER_ID = -1
+
   def self.system_user
-    User.find_by(id: -1)
+    User.find_by(id: SYSTEM_USER_ID)
   end
 
   def self.store
diff --git a/lib/post_revisor.rb b/lib/post_revisor.rb
index dd3db0af102..6f8c23448de 100644
--- a/lib/post_revisor.rb
+++ b/lib/post_revisor.rb
@@ -25,7 +25,7 @@ class PostRevisor
     update_topic_excerpt
     post_process_post
     update_topic_word_counts
-    @post.advance_draft_sequence
+    @post.advance_draft_sequence unless editor.id == Discourse::SYSTEM_USER_ID
     PostAlerter.new.after_save_post(@post)
     publish_revision