diff --git a/Scripts/BlendShape/Editor/PreviewFaceRenderer.cs b/Scripts/BlendShape/Editor/PreviewFaceRenderer.cs
index 0859264dd..27c211149 100644
--- a/Scripts/BlendShape/Editor/PreviewFaceRenderer.cs
+++ b/Scripts/BlendShape/Editor/PreviewFaceRenderer.cs
@@ -2,7 +2,7 @@
 using System.Linq;
 using UnityEditor;
 using UnityEngine;
-
+using UniGLTF;
 
 namespace VRM
 {