diff --git a/SharpCompress.Test/TestBase.cs b/SharpCompress.Test/TestBase.cs
index 75e396c8..7726dd59 100644
--- a/SharpCompress.Test/TestBase.cs
+++ b/SharpCompress.Test/TestBase.cs
@@ -122,14 +122,14 @@ namespace SharpCompress.Test
             using (var file2Stream = File.OpenRead(file2))
             {
                 Assert.AreEqual(file1Stream.Length, file2Stream.Length);
-
                 int byte1 = 0;
                 int byte2 = 0;
-                while (byte1 != -1)
+                for (int counter = 0; byte1 != -1; counter++ )
                 {
                     byte1 = file1Stream.ReadByte();
                     byte2 = file2Stream.ReadByte();
-                    Assert.AreEqual(byte1, byte2);
+                    if (byte1 != byte2) Assert.AreEqual(byte1, byte2, string.Format("Byte {0} differ between {1} and {2}",
+                        counter, file1, file2));
                 }
             }
         }