diff --git a/csharp/src/Google.Protobuf.Test.TestProtos/UnittestFeatures.pb.cs b/csharp/src/Google.Protobuf.Test.TestProtos/UnittestFeatures.pb.cs
index 4f11d19d7f..e764623f52 100644
--- a/csharp/src/Google.Protobuf.Test.TestProtos/UnittestFeatures.pb.cs
+++ b/csharp/src/Google.Protobuf.Test.TestProtos/UnittestFeatures.pb.cs
@@ -59,7 +59,7 @@ namespace Pb {
             "IOkHElQKDmZ1dHVyZV9mZWF0dXJlGBIgASgOMg8ucGIuRW51bUZlYXR1cmVC",
             "K4gBAZgBAZgBBKIBCxIGVkFMVUUxGIQHogELEgZWQUxVRTIY6QeyAQMI6QcS",
             "VwoObGVnYWN5X2ZlYXR1cmUYEyABKA4yDy5wYi5FbnVtRmVhdHVyZUIuiAEB",
-            "mAEBmAEEogELEgZWQUxVRTEYhAeiAQsSBlZBTFVFMhjoB7IBBgjmByDoByrJ",
+            "mAEBmAEEogELEgZWQUxVRTEYhAeiAQsSBlZBTFVFMhjoB7IBBgjnByDoByrJ",
             "AgoLRW51bUZlYXR1cmUSHQoZVEVTVF9FTlVNX0ZFQVRVUkVfVU5LTk9XThAA",
             "EgoKBlZBTFVFMRABEgoKBlZBTFVFMhACEgoKBlZBTFVFMxADEgoKBlZBTFVF",
             "NBAEEgoKBlZBTFVFNRAFEgoKBlZBTFVFNhAGEgoKBlZBTFVFNxAHEgoKBlZB",
diff --git a/csharp/src/Google.Protobuf.Test/testprotos.pb b/csharp/src/Google.Protobuf.Test/testprotos.pb
index 1e7e8e19fa..0d2bc150bb 100644
Binary files a/csharp/src/Google.Protobuf.Test/testprotos.pb and b/csharp/src/Google.Protobuf.Test/testprotos.pb differ