diff --git a/lib/netstd/Thrift/Transport/Server/TNamedPipeServerTransport.cs b/lib/netstd/Thrift/Transport/Server/TNamedPipeServerTransport.cs
index e985a29..7c94300 100644
--- a/lib/netstd/Thrift/Transport/Server/TNamedPipeServerTransport.cs
+++ b/lib/netstd/Thrift/Transport/Server/TNamedPipeServerTransport.cs
@@ -278,7 +278,7 @@
 
         private class ServerTransport : TEndpointTransport
         {
-            private readonly NamedPipeServerStream PipeStream;
+            private NamedPipeServerStream PipeStream;
 
             public ServerTransport(NamedPipeServerStream stream, TConfiguration config)
                 : base(config)
@@ -297,6 +297,7 @@
             public override void Close()
             {
                 PipeStream?.Dispose();
+                PipeStream = null;
             }
 
             public override async ValueTask<int> ReadAsync(byte[] buffer, int offset, int length, CancellationToken cancellationToken)
diff --git a/test/netstd/Client/TestClient.cs b/test/netstd/Client/TestClient.cs
index 4700de8..1227a38 100644
--- a/test/netstd/Client/TestClient.cs
+++ b/test/netstd/Client/TestClient.cs
@@ -407,7 +407,7 @@
                 {
                     Console.WriteLine("*** FAILED ***");
                     Console.WriteLine("Error while parsing arguments");
-                    Console.WriteLine(ex.Message + "\n" + ex.StackTrace);
+                    Console.WriteLine("{0} {1}\nStack:\n{2}", ex.GetType().Name, ex.Message, ex.StackTrace);
                     return ErrorUnknown;
                 }
 
diff --git a/test/netstd/Server/TestServer.cs b/test/netstd/Server/TestServer.cs
index 71a2a30..27577ee 100644
--- a/test/netstd/Server/TestServer.cs
+++ b/test/netstd/Server/TestServer.cs
@@ -579,7 +579,7 @@
                     {
                         Console.WriteLine("*** FAILED ***");
                         Console.WriteLine("Error while  parsing arguments");
-                        Console.WriteLine(ex.Message + " ST: " + ex.StackTrace);
+                        Console.WriteLine("{0} {1}\nStack:\n{2}", ex.GetType().Name, ex.Message, ex.StackTrace);
                         return 1;
                     }