diff --git a/core/trigger.class.inc.php b/core/trigger.class.inc.php
index 701333917..273b09794 100644
--- a/core/trigger.class.inc.php
+++ b/core/trigger.class.inc.php
@@ -53,7 +53,7 @@ abstract class Trigger extends cmdbAbstractObject
 		MetaModel::Init_AddAttribute(new AttributeEnumSet("context", array("allowed_values" => null, "possible_values" => new ValueSetEnumPadded($aTags, true), "sql" => "context", "depends_on" => array(), "is_null_allowed" => true, "max_items" => 12)));
 		// "complement" is a computed field, fed by Trigger sub-classes, in general in ComputeValues method, for eg. the TriggerOnObject fed it with target_class info
 		MetaModel::Init_AddAttribute(new AttributeString("complement", array("allowed_values" => null, "sql" => "complement", "default_value" => null, "is_null_allowed" => true, "depends_on" => array())));
-		MetaModel::Init_AddAttribute(new AttributeEnum("subscription_policy", array("allowed_values" => new ValueSetEnum(implode(",", Combodo\iTop\Core\Trigger\Enum\SubscriptionPolicy::cases())),  "sql" => "subscription_policy", "default_value" => \Combodo\iTop\Core\Trigger\Enum\SubscriptionPolicy::AllowNoChannel, "is_null_allowed" => false, "depends_on" => array())));
+		MetaModel::Init_AddAttribute(new AttributeEnum("subscription_policy", array("allowed_values" => new ValueSetEnum(implode(",", array_map(fn($case) => $case->value, Combodo\iTop\Core\Trigger\Enum\SubscriptionPolicy::cases()))),  "sql" => "subscription_policy", "default_value" => \Combodo\iTop\Core\Trigger\Enum\SubscriptionPolicy::AllowNoChannel, "is_null_allowed" => false, "depends_on" => array())));
 
 		// Display lists
 		MetaModel::Init_SetZListItems('details', array('finalclass', 'description', 'context', 'subscription_policy', 'action_list', 'complement')); // Attributes to be displayed for the complete details