diff --git a/src/SoundMaker/WaveFile/WaveWriter.cs b/src/SoundMaker/WaveFile/WaveWriter.cs
index f54673c..a67c66f 100644
--- a/src/SoundMaker/WaveFile/WaveWriter.cs
+++ b/src/SoundMaker/WaveFile/WaveWriter.cs
@@ -36,7 +36,7 @@ public void Write(string path)
     /// <param name="stream">stream</param>
     public void Write(Stream stream)
     {
-        using var writer = new BinaryWriter(stream);
+        var writer = new BinaryWriter(stream);
         foreach (var chunk in Chunks)
         {
             writer.Write(chunk.GetBytes());