diff --git a/src/SharpCompress/IO/NonDisposingStream.cs b/src/SharpCompress/IO/NonDisposingStream.cs
index b1b87a06..1b1b4939 100644
--- a/src/SharpCompress/IO/NonDisposingStream.cs
+++ b/src/SharpCompress/IO/NonDisposingStream.cs
@@ -21,7 +21,7 @@ namespace SharpCompress.IO
             }
         }
 
-        public Stream Stream { get; }
+        protected Stream Stream { get; }
 
         public override bool CanRead => Stream.CanRead;
 
diff --git a/src/SharpCompress/IO/ReadOnlySubStream.cs b/src/SharpCompress/IO/ReadOnlySubStream.cs
index 48609526..a8449c41 100644
--- a/src/SharpCompress/IO/ReadOnlySubStream.cs
+++ b/src/SharpCompress/IO/ReadOnlySubStream.cs
@@ -3,7 +3,7 @@ using System.IO;
 
 namespace SharpCompress.IO
 {
-    internal class ReadOnlySubStream : Stream
+    internal class ReadOnlySubStream : NonDisposingStream
     {
         public ReadOnlySubStream(Stream stream, long bytesToRead)
             : this(stream, null, bytesToRead)
@@ -11,8 +11,8 @@ namespace SharpCompress.IO
         }
 
         public ReadOnlySubStream(Stream stream, long? origin, long bytesToRead)
+            : base(stream, false)
         {
-            Stream = stream;
             if (origin != null)
             {
                 stream.Position = origin.Value;
@@ -20,18 +20,8 @@ namespace SharpCompress.IO
             BytesLeftToRead = bytesToRead;
         }
 
-        protected override void Dispose(bool disposing)
-        {
-            if (disposing)
-            {
-                //Stream.Dispose();
-            }
-        }
-
         private long BytesLeftToRead { get; set; }
 
-        public Stream Stream { get; }
-
         public override bool CanRead => true;
 
         public override bool CanSeek => false;