diff --git a/SharpCompress/Compressor/LZMA/Utilites/UnpackSubStream.cs b/SharpCompress/Compressor/LZMA/Utilites/UnpackSubStream.cs
deleted file mode 100644
index 67547dcf..00000000
--- a/SharpCompress/Compressor/LZMA/Utilites/UnpackSubStream.cs
+++ /dev/null
@@ -1,96 +0,0 @@
-
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Text;
-
-namespace master._7zip.Utilities
-{
-    /// <remarks>
-    /// This stream is a length-constrained wrapper around a cached stream so it does not dispose the inner stream.
-    /// </remarks>
-    internal class UnpackSubStream: Stream
-    {
-        private Stream mSource;
-        private long mLength;
-        private long mOffset;
-
-        internal UnpackSubStream(Stream source, long length)
-        {
-            mSource = source;
-            mLength = length;
-        }
-
-        public override bool CanRead
-        {
-            get { return mSource.CanRead; }
-        }
-
-        public override bool CanSeek
-        {
-            get { return false; }
-        }
-
-        public override bool CanWrite
-        {
-            get { return false; }
-        }
-
-        public override void Flush()
-        {
-            throw new NotSupportedException();
-        }
-
-        public override long Length
-        {
-            get { return mLength; }
-        }
-
-        public override long Position
-        {
-            get { return mOffset; }
-            set { throw new NotSupportedException(); }
-        }
-
-        public override int Read(byte[] buffer, int offset, int count)
-        {
-            if(buffer == null)
-                throw new ArgumentNullException("buffer");
-
-            if(offset < 0 || offset > buffer.Length)
-                throw new ArgumentOutOfRangeException("offset");
-
-            if(count < 0 || count > buffer.Length - offset)
-                throw new ArgumentOutOfRangeException("count");
-
-            if(count > mLength - mOffset)
-                count = (int)(mLength - mOffset);
-
-            if(count == 0)
-                return 0;
-
-            int processed = mSource.Read(buffer, offset, count);
-            if(processed == 0)
-                throw new EndOfStreamException("Decoded stream ended prematurely, unpacked data is corrupt.");
-
-            mOffset += processed;
-            return processed;
-        }
-
-        public override long Seek(long offset, SeekOrigin origin)
-        {
-            throw new NotSupportedException();
-        }
-
-        public override void SetLength(long value)
-        {
-            throw new NotSupportedException();
-        }
-
-        public override void Write(byte[] buffer, int offset, int count)
-        {
-            throw new NotSupportedException();
-        }
-    }
-}
diff --git a/SharpCompress/SharpCompress.Portable.csproj b/SharpCompress/SharpCompress.Portable.csproj
index 479f9ec6..6a0644d1 100644
--- a/SharpCompress/SharpCompress.Portable.csproj
+++ b/SharpCompress/SharpCompress.Portable.csproj
@@ -204,7 +204,6 @@
     <Compile Include="Compressor\LZMA\Utilites\CrcBuilderStream.cs" />
     <Compile Include="Compressor\LZMA\Utilites\CrcCheckStream.cs" />
     <Compile Include="Compressor\LZMA\Utilites\IPasswordProvider.cs" />
-    <Compile Include="Compressor\LZMA\Utilites\UnpackSubStream.cs" />
     <Compile Include="Compressor\LZMA\Utilites\Utils.cs" />
     <Compile Include="Compressor\PPMd\H\FreqData.cs" />
     <Compile Include="Compressor\PPMd\H\ModelPPM.cs" />
diff --git a/SharpCompress/SharpCompress.WindowsStore.csproj b/SharpCompress/SharpCompress.WindowsStore.csproj
index 7de253c3..a220a041 100644
--- a/SharpCompress/SharpCompress.WindowsStore.csproj
+++ b/SharpCompress/SharpCompress.WindowsStore.csproj
@@ -194,7 +194,6 @@
     <Compile Include="Compressor\LZMA\Utilites\CrcBuilderStream.cs" />
     <Compile Include="Compressor\LZMA\Utilites\CrcCheckStream.cs" />
     <Compile Include="Compressor\LZMA\Utilites\IPasswordProvider.cs" />
-    <Compile Include="Compressor\LZMA\Utilites\UnpackSubStream.cs" />
     <Compile Include="Compressor\LZMA\Utilites\Utils.cs" />
     <Compile Include="Compressor\PPMd\H\FreqData.cs" />
     <Compile Include="Compressor\PPMd\H\ModelPPM.cs" />