diff --git a/src/NestedSet.php b/src/NestedSet.php
index 8ec8e02..4c7c106 100644
--- a/src/NestedSet.php
+++ b/src/NestedSet.php
@@ -77,7 +77,7 @@ public static function getDefaultColumns()
      */
     public static function isNode($node)
     {
-        return is_object($node) && in_array(NodeTrait::class, (array)$node);
+        return is_object($node) && array_key_exists(NodeTrait::class, class_uses($node));
     }
 
-}
\ No newline at end of file
+}