diff --git a/core/trigger.class.inc.php b/core/trigger.class.inc.php
index 7b0ae7d42..0c5f9a0dc 100644
--- a/core/trigger.class.inc.php
+++ b/core/trigger.class.inc.php
@@ -158,9 +158,9 @@ abstract class TriggerOnObject extends Trigger
 	public function DoActivate($aContextArgs)
 	{
 		$bGo = true;
-		if (isset($aContextArgs['this->id']))
+		if (isset($aContextArgs['this->object()']))
 		{
-			$bGo = $this->IsTargetObject($aContextArgs['this->id']);
+			$bGo = $this->IsTargetObject($aContextArgs['this->object()']->GetKey());
 		}
 		if ($bGo)
 		{