diff --git a/csharp/sbe-tests/FieldAccessOrderCheckTests.cs b/csharp/sbe-tests/FieldAccessOrderCheckTests.cs
index 1ee456964..89ba377fd 100644
--- a/csharp/sbe-tests/FieldAccessOrderCheckTests.cs
+++ b/csharp/sbe-tests/FieldAccessOrderCheckTests.cs
@@ -3194,7 +3194,7 @@ private void ModifyHeaderToLookLikeVersion1()
         {
             var messageHeaderDecoder = new MessageHeader();
             messageHeaderDecoder.Wrap(_buffer, Offset, MessageHeader.SbeSchemaVersion);
-            Debug.Assert(messageHeaderDecoder.Version == 1);
+            Debug.Assert(messageHeaderDecoder.Version >= 1);
             int v0TemplateId = messageHeaderDecoder.TemplateId - 1_000;
             var messageHeaderEncoder = new MessageHeader();
             messageHeaderEncoder.Wrap(_buffer, Offset, MessageHeader.SbeSchemaVersion);