diff --git a/src/SharpCompress/Compressors/Rar/RarCrcStream.Async.cs b/src/SharpCompress/Compressors/Rar/RarCrcStream.Async.cs
index a76a9ed6..0042af7a 100644
--- a/src/SharpCompress/Compressors/Rar/RarCrcStream.Async.cs
+++ b/src/SharpCompress/Compressors/Rar/RarCrcStream.Async.cs
@@ -39,7 +39,7 @@ internal partial class RarCrcStream : RarStream
         )
         {
             // NOTE: we use the last FileHeader in a multipart volume to check CRC
-            throw new InvalidFormatException("file crc mismatch");
+            throw new InvalidFormatException("file crc mismatch: " + _key);
         }
 
         return result;