diff --git a/inc/question.class.php b/inc/question.class.php
index 08e28dce6..419639a83 100644
--- a/inc/question.class.php
+++ b/inc/question.class.php
@@ -1220,6 +1220,7 @@ public static function dropdownObjectSubType(string $name, array $options = []):
             Phone::class              => Phone::getTypeName($plural),
             Line::class               => Line::getTypeName($plural),
             PassiveDCEquipment::class => PassiveDCEquipment::getTypeName($plural),
+            PDU::class                => PDU::getTypeName($plural),
          ],
          __("Assistance") => [
             Ticket::class             => Ticket::getTypeName($plural),