diff --git a/Assets/VRM10/Runtime/IO/ArrayBytesBuffer.cs b/Assets/VRM10/Runtime/IO/ArrayBytesBuffer.cs
index fc1dd7de6..3cf5486e3 100644
--- a/Assets/VRM10/Runtime/IO/ArrayBytesBuffer.cs
+++ b/Assets/VRM10/Runtime/IO/ArrayBytesBuffer.cs
@@ -43,11 +43,11 @@ namespace UniVRM10
             backup.CopyTo(m_bytes, backup.Length);
         }
 
-        public void Extend(ArraySegment<byte> array, int stride, out int offset, out int length)
+        public void Extend(ArraySegment<byte> array, out int offset, out int length)
         {
             var tmp = m_bytes;
             // alignment
-            var padding = m_used % stride == 0 ? 0 : stride - m_used % stride;
+            var padding = 0; // m_used % stride == 0 ? 0 : stride - m_used % stride;
 
             if (m_bytes == null || m_used + padding + array.Count > m_bytes.Length)
             {
diff --git a/Assets/VRM10/Runtime/IO/BufferAccessorAdapter.cs b/Assets/VRM10/Runtime/IO/BufferAccessorAdapter.cs
index 39f0ae7a1..719c5b197 100644
--- a/Assets/VRM10/Runtime/IO/BufferAccessorAdapter.cs
+++ b/Assets/VRM10/Runtime/IO/BufferAccessorAdapter.cs
@@ -39,7 +39,7 @@ namespace UniVRM10
                 count = self.Count;
             }
             var slice = self.Bytes.Slice(offset * stride, count * stride);
-            return storage.AppendToBuffer(bufferIndex, slice, stride);
+            return storage.AppendToBuffer(bufferIndex, slice);
         }
 
         static glTFAccessor CreateGltfAccessor(this VrmLib.BufferAccessor self,
@@ -116,8 +116,8 @@ namespace UniVRM10
                         sparseValueSpan[i] = value;
                     }
 
-                    var sparseIndexView = storage.AppendToBuffer(bufferIndex, sparseIndexBin, 4);
-                    var sparseValueView = storage.AppendToBuffer(bufferIndex, sparseValueBin, 12);
+                    var sparseIndexView = storage.AppendToBuffer(bufferIndex, sparseIndexBin);
+                    var sparseValueView = storage.AppendToBuffer(bufferIndex, sparseValueBin);
 
                     var accessorIndex = storage.Gltf.accessors.Count;
                     var accessor = new glTFAccessor
diff --git a/Assets/VRM10/Runtime/IO/ImageAdapter.cs b/Assets/VRM10/Runtime/IO/ImageAdapter.cs
index f678237d9..d6bfda66f 100644
--- a/Assets/VRM10/Runtime/IO/ImageAdapter.cs
+++ b/Assets/VRM10/Runtime/IO/ImageAdapter.cs
@@ -87,7 +87,7 @@ namespace UniVRM10
 
         public static glTFImage ToGltf(this VrmLib.Image src, Vrm10Storage storage)
         {
-            var viewIndex = storage.AppendToBuffer(0, src.Bytes, 1);
+            var viewIndex = storage.AppendToBuffer(0, src.Bytes);
             var gltf = storage.Gltf;
             return new glTFImage
             {
diff --git a/Assets/VRM10/Runtime/IO/Vrm10Storage.cs b/Assets/VRM10/Runtime/IO/Vrm10Storage.cs
index 0880ad7d3..a3767d596 100644
--- a/Assets/VRM10/Runtime/IO/Vrm10Storage.cs
+++ b/Assets/VRM10/Runtime/IO/Vrm10Storage.cs
@@ -73,9 +73,9 @@ namespace UniVRM10
             Buffers[0].ExtendCapacity(bytesLength);
         }
 
-        public int AppendToBuffer(int bufferIndex, ArraySegment<byte> segment, int stride)
+        public int AppendToBuffer(int bufferIndex, ArraySegment<byte> segment)
         {
-            Buffers[bufferIndex].Extend(segment, stride, out int offset, out int length);
+            Buffers[bufferIndex].Extend(segment, out int offset, out int length);
             var viewIndex = Gltf.bufferViews.Count;
             Gltf.bufferViews.Add(new UniGLTF.glTFBufferView
             {