diff --git a/datamodels/2.x/itop-portal-base/portal/src/Form/ObjectFormManager.php b/datamodels/2.x/itop-portal-base/portal/src/Form/ObjectFormManager.php
index 3b97ff593..4f7041d50 100644
--- a/datamodels/2.x/itop-portal-base/portal/src/Form/ObjectFormManager.php
+++ b/datamodels/2.x/itop-portal-base/portal/src/Form/ObjectFormManager.php
@@ -703,7 +703,7 @@ class ObjectFormManager extends FormManager
 
 			/** @var Field $oField */
 			$oField = null;
-			if (is_callable(get_class($oAttDef).'::MakeFormField'))
+			if (is_callable([$oAttDef, 'MakeFormField']))
 			{
 				$oField = $oAttDef->MakeFormField($this->oObject);
 			}