diff --git a/Assets/VRM10/Runtime/Migration/MeshUpdater.cs b/Assets/VRM10/Runtime/Migration/MeshUpdater.cs
index 24e3dda1f..fe57e83ee 100644
--- a/Assets/VRM10/Runtime/Migration/MeshUpdater.cs
+++ b/Assets/VRM10/Runtime/Migration/MeshUpdater.cs
@@ -157,7 +157,7 @@ namespace UniVRM10
                 gltfNode.translation = node.LocalTranslation.ToFloat3();
                 gltfNode.rotation = node.LocalRotation.ToFloat4();
                 gltfNode.scale = node.LocalScaling.ToFloat3();
-                if (gltfNode.skin >= 0)
+                if (gltfNode.mesh >= 0 && gltfNode.skin >= 0)
                 {
                     var gltfSkin = gltf.skins[gltfNode.skin];
                     gltfSkin.inverseBindMatrices = AddAccessor(node.MeshGroup.Skin.InverseMatrices.GetSpan<Matrix4x4>());