diff --git a/src/SharpCompress/Compressors/LZMA/ICoder.cs b/src/SharpCompress/Compressors/LZMA/ICoder.cs
index f5049dd7..3ae84f48 100644
--- a/src/SharpCompress/Compressors/LZMA/ICoder.cs
+++ b/src/SharpCompress/Compressors/LZMA/ICoder.cs
@@ -25,7 +25,7 @@ namespace SharpCompress.Compressors.LZMA
         }
     }
 
-    internal interface ICodeProgress
+    public interface ICodeProgress
     {
         /// <summary>
         /// Callback progress.
@@ -169,4 +169,4 @@ namespace SharpCompress.Compressors.LZMA
     {
         void SetDecoderProperties(byte[] properties);
     }
-}
\ No newline at end of file
+}
diff --git a/src/SharpCompress/Compressors/LZMA/LzmaDecoder.cs b/src/SharpCompress/Compressors/LZMA/LzmaDecoder.cs
index ee595e68..f54c2bf7 100644
--- a/src/SharpCompress/Compressors/LZMA/LzmaDecoder.cs
+++ b/src/SharpCompress/Compressors/LZMA/LzmaDecoder.cs
@@ -7,7 +7,7 @@ using SharpCompress.Compressors.LZMA.RangeCoder;
 
 namespace SharpCompress.Compressors.LZMA
 {
-    internal class Decoder : ICoder, ISetDecoderProperties // ,System.IO.Stream
+    public class Decoder : ICoder, ISetDecoderProperties // ,System.IO.Stream
     {
         private class LenDecoder
         {