diff --git a/TCPServer.cs b/TCPServer.cs
index 2ee94dc29b08c18a1ded51af48784ef2f7198fe2..5e8b6bf62a602d4ebfdb756c4d0c6a3cd8f97cdb 100644
--- a/TCPServer.cs
+++ b/TCPServer.cs
@@ -86,7 +86,7 @@ class TCPServer
         // wait for answer from Client
         while (true)
         {
-            Console.Write(":");
+            Console.Write("::");
             bytesRead = clientStream.Read(receivedData, 0, 32768);
             if (bytesRead == 0) break;
         }