diff --git a/include/class.ticket.php b/include/class.ticket.php
index 71f8dc76559e9198f9ee22c5d258815d957db848..d22bd3b955ab46a3ba64756c0b857052a17c7d97 100644
--- a/include/class.ticket.php
+++ b/include/class.ticket.php
@@ -450,7 +450,7 @@ class Ticket {
     function getSLA() {
 
         if(!$this->sla && $this->getSLAId())
-            $this->sla = SLA::lookup($this->getSLAId);
+            $this->sla = SLA::lookup($this->getSLAId());
 
         return $this->sla;
     }