diff --git a/src/DotCompressorBenchmark.Tools/BenchmarkLZMA.cs b/src/DotCompressorBenchmark.Tools/BenchmarkLZMA.cs
index 9a7613e..f770ca4 100644
--- a/src/DotCompressorBenchmark.Tools/BenchmarkLZMA.cs
+++ b/src/DotCompressorBenchmark.Tools/BenchmarkLZMA.cs
@@ -33,7 +33,7 @@ public static long Compress(byte[] srcBytes, byte[] dstBytes, int level)
         outStream.Write(BitConverter.GetBytes((long)srcBytes.Length), 0, 8);
         encoder.Code(inStream, outStream, srcBytes.Length, dstBytes.Length, null);
 
-        return outStream.Position - 5 - 8;
+        return outStream.Position;
     }
 
     public static long Decompress(byte[] srcBytes, long size, byte[] dstBytes)
diff --git a/src/DotCompressorBenchmark.Tools/BenchmarkZLib.cs b/src/DotCompressorBenchmark.Tools/BenchmarkZLib.cs
index a93e7ed..e7c20f3 100644
--- a/src/DotCompressorBenchmark.Tools/BenchmarkZLib.cs
+++ b/src/DotCompressorBenchmark.Tools/BenchmarkZLib.cs
@@ -11,7 +11,7 @@ public class BenchmarkZLib : IBenchmark
     public BenchmarkZLib(CompressionLevel level)
     {
         _level = level;
-        Name = $"ZLib {_level.ToString()}";
+        Name = $"zlib -{_level.ToString()}";
     }
 
     public BenchmarkResult Roundtrip(string filename, byte[] srcBytes, byte[] dstBytes)