diff --git a/Services/Tracking/classes/status/class.ilLPStatusCourseReference.php b/Services/Tracking/classes/status/class.ilLPStatusCourseReference.php
index b2b3716cd4a0..f2b21b3d2d80 100644
--- a/Services/Tracking/classes/status/class.ilLPStatusCourseReference.php
+++ b/Services/Tracking/classes/status/class.ilLPStatusCourseReference.php
@@ -180,7 +180,7 @@ private static function getInstanceByObjId(
     private function readTargetObjId(int $a_obj_id): void
     {
         $this->target_obj_id = ilObject::_lookupObjId(
-            ilObjCourseReference::_lookupTargetRefId($a_obj_id)
+            (int) ilObjCourseReference::_lookupTargetRefId($a_obj_id)
         );
     }
 }