diff --git a/include/class.ticket.php b/include/class.ticket.php
index 75c818b405e287edaa6c68c4a4cb7836686c9b9f..c6b2124b45cfea9721aa84ca04a1ec246b2cb14c 100644
--- a/include/class.ticket.php
+++ b/include/class.ticket.php
@@ -221,7 +221,7 @@ implements RestrictedAccess, Threadable, Searchable {
 
     function isReopenable() {
         return ($this->getStatus()->isReopenable() && $this->getDept()->allowsReopen()
-        && ($this->getTopic() ? $this->getTopic()->allowsReopen() : null));
+        && ($this->getTopic() ? $this->getTopic()->allowsReopen() : true));
     }
 
     function isClosed() {