diff --git a/lib/csharp/test/ThriftTest/TestClient.cs b/lib/csharp/test/ThriftTest/TestClient.cs
index 4c42ef7..cb73597 100644
--- a/lib/csharp/test/ThriftTest/TestClient.cs
+++ b/lib/csharp/test/ThriftTest/TestClient.cs
@@ -27,6 +27,7 @@
 using Thrift.Protocol;
 using Thrift.Transport;
 using Thrift.Test;
+using System.Security.Authentication;
 
 namespace Test
 {
@@ -60,7 +61,7 @@
                         {
                             string certPath = "../../../../test/keys/client.p12";
                             X509Certificate cert = new X509Certificate2(certPath, "thrift");
-                            trans = new TTLSSocket(host, port, cert, (o, c, chain, errors) => true);
+                            trans = new TTLSSocket(host, port, 0, cert, (o, c, chain, errors) => true, null, SslProtocols.Tls);
                         }
                         else
                         {
diff --git a/lib/csharp/test/ThriftTest/TestServer.cs b/lib/csharp/test/ThriftTest/TestServer.cs
index 4c8fc3b..e51ae92 100644
--- a/lib/csharp/test/ThriftTest/TestServer.cs
+++ b/lib/csharp/test/ThriftTest/TestServer.cs
@@ -32,6 +32,7 @@
 using Thrift;
 using System.Threading;
 using System.Text;
+using System.Security.Authentication;
 
 namespace Test
 {
@@ -468,7 +469,7 @@
                     if (useEncryption)
                     {
                         string certPath = "../../../../test/keys/server.p12";
-                        trans = new TTLSServerSocket(port, 0, useBufferedSockets, new X509Certificate2(certPath, "thrift"));
+                        trans = new TTLSServerSocket(port, 0, useBufferedSockets, new X509Certificate2(certPath, "thrift"), null, null, SslProtocols.Tls);
                     }
                     else
                     {