diff --git a/include/class.mailfetch.php b/include/class.mailfetch.php
index c20c426fc67f7969a89bec22659954d4c7bec1f7..024f80ce5d430baab63c024987a7a9a565d1cacc 100644
--- a/include/class.mailfetch.php
+++ b/include/class.mailfetch.php
@@ -604,6 +604,7 @@ class MailFetcher {
     function createTicket($mid) {
         global $ost;
 
+        unset($this->tnef);
         if(!($mailinfo = $this->getHeaderInfo($mid)))
             return false;