diff --git a/lib/csharp/src/Transport/TServerSocket.cs b/lib/csharp/src/Transport/TServerSocket.cs
index 453df34..e29a87e 100644
--- a/lib/csharp/src/Transport/TServerSocket.cs
+++ b/lib/csharp/src/Transport/TServerSocket.cs
@@ -90,13 +90,13 @@
 			try
 			{
 				// Make server socket
-				this.server = TSocketVersionizer.CreateTcpListener(port);
+				this.server = TSocketVersionizer.CreateTcpListener(this.port);
 				this.server.Server.NoDelay = true;
 			}
 			catch (Exception)
 			{
 				server = null;
-				throw new TTransportException("Could not create ServerSocket on port " + port + ".");
+				throw new TTransportException("Could not create ServerSocket on port " + this.port + ".");
 			}
 		}
 
diff --git a/lib/csharp/src/Transport/TTLSServerSocket.cs b/lib/csharp/src/Transport/TTLSServerSocket.cs
index d51c217..24222b7 100644
--- a/lib/csharp/src/Transport/TTLSServerSocket.cs
+++ b/lib/csharp/src/Transport/TTLSServerSocket.cs
@@ -126,13 +126,13 @@
             try
             {
                 // Create server socket
-                this.server = TSocketVersionizer.CreateTcpListener(port);
+                this.server = TSocketVersionizer.CreateTcpListener(this.port);
                 this.server.Server.NoDelay = true;
             }
             catch (Exception)
             {
                 server = null;
-                throw new TTransportException("Could not create ServerSocket on port " + port + ".");
+                throw new TTransportException("Could not create ServerSocket on port " + this.port + ".");
             }
         }