diff --git a/src/Features/Clonable.php b/src/Features/Clonable.php
index f66e4e81fd2..13935204b65 100644
--- a/src/Features/Clonable.php
+++ b/src/Features/Clonable.php
@@ -165,7 +165,8 @@ private function cloneRelations(CommonDBTM $source, bool $history): void
      */
     public function prepareInputForClone($input)
     {
-        if (\Toolbox::hasTrait(static::class, AssignableAsset::class)) {
+        if (method_exists($this, 'prepareGroupFields')) {
+            // Toolbox::hasTrait doesn't work to tell PHPStan this method exists even when using generics and assert-if-true
             $input = $this->prepareGroupFields($input);
         }
         return $input;
@@ -323,7 +324,8 @@ public function computeCloneName(
      */
     public function post_clone($source, $history)
     {
-        if (\Toolbox::hasTrait(static::class, AssignableAsset::class)) {
+        if (method_exists($this, 'updateGroupFields')) {
+            // Toolbox::hasTrait doesn't work to tell PHPStan this method exists even when using generics and assert-if-true
             $this->updateGroupFields();
         }
     }
diff --git a/src/Toolbox.php b/src/Toolbox.php
index 1e360d0561e..f10d0825dcc 100644
--- a/src/Toolbox.php
+++ b/src/Toolbox.php
@@ -3080,11 +3080,9 @@ public static function isValidWebUrl($url): bool
      * Checks if the given class or object has the specified trait.
      * This function checks the class itself and all parent classes for the trait.
      * @since 10.0.0
-     * @template T
      * @param string|object $class The class or object
-     * @param class-string<T> $trait The trait
+     * @param class-string $trait The trait
      * @return bool True if the class or its parents have the specified trait
-     * @phpstan-assert-if-true class-string<T> $class
      */
     public static function hasTrait($class, string $trait): bool
     {
diff --git a/tests/functional/Glpi/Inventory/Inventory.php b/tests/functional/Glpi/Inventory/Inventory.php
index fb5c1d12d7b..b8969ece573 100644
--- a/tests/functional/Glpi/Inventory/Inventory.php
+++ b/tests/functional/Glpi/Inventory/Inventory.php
@@ -193,7 +193,9 @@ private function checkComputer1($computers_id)
             'is_dynamic' => 1,
             'autoupdatesystems_id' => 0,
             'uuid' => null,
-            'is_recursive' => 0
+            'is_recursive' => 0,
+            'groups_id' => [],
+            'groups_id_tech' => [],
         ];
         $this->array($monitor_fields)->isIdenticalTo($expected);
 
@@ -894,7 +896,9 @@ private function checkComputer1($computers_id)
             'sysdescr' => null,
             'last_inventory_update' => $_SESSION['glpi_currenttime'],
             'snmpcredentials_id' => 0,
-            'autoupdatesystems_id' => $autoupdatesystems_id
+            'autoupdatesystems_id' => $autoupdatesystems_id,
+            'groups_id' => [],
+            'groups_id_tech' => [],
         ];
         $this->array($printer_fields)->isIdenticalTo($expected);