diff --git a/administrator/models/hierarchys.php b/administrator/models/hierarchys.php
index 219cbcb..3604d3e 100644
--- a/administrator/models/hierarchys.php
+++ b/administrator/models/hierarchys.php
@@ -172,7 +172,7 @@ public function getItems()
 				$item->ReportsToUserName = array();
 				$item->ReportsTo = array();
 
-				if ($item->subuserId)
+				if (isset($item->subuserId))
 				{
 					$results = $this->hierarchyModel->getReportsTo($item->user_id);
 					$item->ReportsTo = $results;