diff --git a/src/csharp/Grpc.Core/ForwardedTypes.cs b/src/csharp/Grpc.Core/ForwardedTypes.cs
index f860545a9a2..4394a7c907c 100644
--- a/src/csharp/Grpc.Core/ForwardedTypes.cs
+++ b/src/csharp/Grpc.Core/ForwardedTypes.cs
@@ -70,6 +70,7 @@ using Grpc.Core.Utils;
 [assembly:TypeForwardedToAttribute(typeof(SslCredentials))]
 [assembly:TypeForwardedToAttribute(typeof(Status))]
 [assembly:TypeForwardedToAttribute(typeof(StatusCode))]
+[assembly:TypeForwardedToAttribute(typeof(VerifyPeerCallback))]
 [assembly:TypeForwardedToAttribute(typeof(VerifyPeerContext))]
 [assembly:TypeForwardedToAttribute(typeof(VersionInfo))]
 [assembly:TypeForwardedToAttribute(typeof(WriteOptions))]