diff --git a/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Interprocess/Runtime/Workers/NamedPipeWorker.cs b/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Interprocess/Runtime/Workers/NamedPipeWorker.cs
index 6ea8296..60c5a00 100644
--- a/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Interprocess/Runtime/Workers/NamedPipeWorker.cs
+++ b/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Interprocess/Runtime/Workers/NamedPipeWorker.cs
@@ -249,9 +249,9 @@ async void RunReceiveLoop(Stream pipeStream, Func<CancellationToken, System.Thre
                                 {
                                     var t = AsyncRequestHandlerRegistory.Get(reqTypeName, resTypeName);
                                     var interfaceType = t.GetInterfaces().Where(x => x.IsGenericType && x.Name.StartsWith("IAsyncRequestHandler"))
-                                        .First(x => x.GetGenericArguments().Any(x => x.FullName == header.RequestType));
+                                        .First(x => x.GetGenericArguments().Any(y => y.FullName == header.RequestType));
                                     var coreInterfaceType = t.GetInterfaces().Where(x => x.IsGenericType && x.Name.StartsWith("IAsyncRequestHandlerCore"))
-                                        .First(x => x.GetGenericArguments().Any(x => x.FullName == header.RequestType));
+                                        .First(x => x.GetGenericArguments().Any(y => y.FullName == header.RequestType));
                                     var service = provider.GetRequiredService(interfaceType); // IAsyncRequestHandler<TRequest,TResponse>
                                     var genericArgs = interfaceType.GetGenericArguments(); // [TRequest, TResponse]
                                     var request = MessagePackSerializer.Deserialize(genericArgs[0], message.ValueMemory, options.MessagePackSerializerOptions);
diff --git a/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Interprocess/Runtime/Workers/TcpWorker.cs b/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Interprocess/Runtime/Workers/TcpWorker.cs
index 16d2e75..fbe9939 100644
--- a/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Interprocess/Runtime/Workers/TcpWorker.cs
+++ b/src/MessagePipe.Unity/Assets/Plugins/MessagePipe.Interprocess/Runtime/Workers/TcpWorker.cs
@@ -264,9 +264,9 @@ async void RunReceiveLoop(SocketTcpClient client)
                                 {
                                     var t = AsyncRequestHandlerRegistory.Get(reqTypeName, resTypeName);
                                     var interfaceType = t.GetInterfaces().Where(x => x.IsGenericType && x.Name.StartsWith("IAsyncRequestHandler"))
-                                        .First(x => x.GetGenericArguments().Any(x => x.FullName == header.RequestType));
+                                        .First(x => x.GetGenericArguments().Any(y => y.FullName == header.RequestType));
                                     var coreInterfaceType = t.GetInterfaces().Where(x => x.IsGenericType && x.Name.StartsWith("IAsyncRequestHandlerCore"))
-                                        .First(x => x.GetGenericArguments().Any(x => x.FullName == header.RequestType));
+                                        .First(x => x.GetGenericArguments().Any(y => y.FullName == header.RequestType));
                                     var service = provider.GetRequiredService(interfaceType); // IAsyncRequestHandler<TRequest,TResponse>
                                     var genericArgs = interfaceType.GetGenericArguments(); // [TRequest, TResponse]
                                     // Unity IL2CPP does not work(can not invoke nongenerics MessagePackSerializer)