diff --git a/Assets/VRM/UniGLTF/Scripts/IO/MeshExporter.cs b/Assets/VRM/UniGLTF/Scripts/IO/MeshExporter.cs
index 046a698d8..73f1049a0 100644
--- a/Assets/VRM/UniGLTF/Scripts/IO/MeshExporter.cs
+++ b/Assets/VRM/UniGLTF/Scripts/IO/MeshExporter.cs
@@ -265,6 +265,10 @@ namespace UniGLTF
 
                     blendShapeIndexMap.Add(j, exportBlendShapes++);
 
+                    // maybe skip
+
+                    blendShapeIndexMap.Add(j, exportBlendShapes++);
+
                     //
                     // all primitive has same blendShape
                     //
diff --git a/Assets/VRM/UniGLTF/Scripts/IO/gltfExporter.cs b/Assets/VRM/UniGLTF/Scripts/IO/gltfExporter.cs
index 70c6595e4..c60cc83a6 100644
--- a/Assets/VRM/UniGLTF/Scripts/IO/gltfExporter.cs
+++ b/Assets/VRM/UniGLTF/Scripts/IO/gltfExporter.cs
@@ -27,7 +27,7 @@ namespace UniGLTF
             var go = Selection.activeObject as GameObject;
 
             if (go.transform.position == Vector3.zero &&
-                go.transform.rotation == Quaternion.identity && 
+                go.transform.rotation == Quaternion.identity &&
                 go.transform.localScale == Vector3.one)
             {
                 var path = EditorUtility.SaveFilePanel(
diff --git a/Assets/VRM/UniVRM/Editor/Format/VRMExportSettings.cs b/Assets/VRM/UniVRM/Editor/Format/VRMExportSettings.cs
index 336b39b94..fc07231fc 100644
--- a/Assets/VRM/UniVRM/Editor/Format/VRMExportSettings.cs
+++ b/Assets/VRM/UniVRM/Editor/Format/VRMExportSettings.cs
@@ -66,7 +66,7 @@ namespace VRM
         /// BlendShapeのシリアライズにSparseAccessorを使う
         /// </summary>
         [Tooltip("Use sparse accessor for blendshape. This may reduce vrm size")]
-        public bool UseSparseAccessor = true;
+        public bool UseSparseAccessor = false;
 
         /// <summary>
         /// BlendShapeのPositionのみをエクスポートする