diff --git a/PCK-Studio/Internal/ModelImporter.cs b/PCK-Studio/Internal/ModelImporter.cs
index 3c1e25a7..7447e014 100644
--- a/PCK-Studio/Internal/ModelImporter.cs
+++ b/PCK-Studio/Internal/ModelImporter.cs
@@ -1,11 +1,26 @@
-using System;
+/* Copyright (c) 2024-present miku-666
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1.The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+**/
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
 using System.Numerics;
-using System.Text;
-using System.Threading.Tasks;
 using PckStudio.Interfaces;
 
 namespace PckStudio.Internal