Index: in-bulletin/units/posts/post_tp.php
===================================================================
--- in-bulletin/units/posts/post_tp.php	(revision 12974)
+++ in-bulletin/units/posts/post_tp.php	(working copy)
@@ -67,7 +67,7 @@
 			/* @var $poster UsersItem */
 
 			$poster_id = $object->GetDBField('CreatedById');
-			if ($poster_id > 0) {
+			if ($poster_id) {
 				// not Guest & root
 				if ($poster->GetID() != $poster_id) {
 					// previous poster differs from requested