diff --git a/tests/ShortDev.Microsoft.ConnectedDevices.Test/CryptorTest.cs b/tests/ShortDev.Microsoft.ConnectedDevices.Test/CryptorTest.cs
index bdad91b6..851dc74f 100644
--- a/tests/ShortDev.Microsoft.ConnectedDevices.Test/CryptorTest.cs
+++ b/tests/ShortDev.Microsoft.ConnectedDevices.Test/CryptorTest.cs
@@ -32,7 +32,7 @@ public void Decrypt_ShouldYieldSameAsEncrypt()
 
         var decrypted = cryptor.DecryptMessage(header, encryptedPayload, hmac).Span;
 
-        Assert.True(payload.SequenceEqual(decrypted[sizeof(uint)..]));
+        Assert.True(payload.SequenceEqual(decrypted));
     }
 
     sealed class FragmentSenderSpy : IFragmentSender