diff --git a/src/csharp/Grpc.Core/ForwardedTypes.cs b/src/csharp/Grpc.Core/ForwardedTypes.cs
index 8b42cae3890..ab5f5a87c67 100644
--- a/src/csharp/Grpc.Core/ForwardedTypes.cs
+++ b/src/csharp/Grpc.Core/ForwardedTypes.cs
@@ -18,6 +18,7 @@
 
 using System.Runtime.CompilerServices;
 using Grpc.Core;
+using Grpc.Core.Interceptors;
 using Grpc.Core.Internal;
 using Grpc.Core.Utils;