diff --git a/include/class.thread.php b/include/class.thread.php
index 8bb321eedea75d38d3a855e0de3d520df471d480..14da0952d3cc4fd73f1dcd177270840cf74b8c77 100644
--- a/include/class.thread.php
+++ b/include/class.thread.php
@@ -314,7 +314,7 @@ implements Searchable {
     function refer($to) {
 
         if ($this->isReferred($to, true))
-            return true;
+            return false;
 
         $vars = array('thread_id' => $this->getId());
         switch (true) {