diff --git a/mcs/class/Mono.Debugger.Soft/Mono.Debugger.Soft/VirtualMachineManager.cs b/mcs/class/Mono.Debugger.Soft/Mono.Debugger.Soft/VirtualMachineManager.cs
index 12c5aaaf6f481d8f613f1302ba5f9a8cafd3c077..d537cbff737f3ee9e0baa67c22d12cb0d64c18b7 100644
--- a/mcs/class/Mono.Debugger.Soft/Mono.Debugger.Soft/VirtualMachineManager.cs
+++ b/mcs/class/Mono.Debugger.Soft/Mono.Debugger.Soft/VirtualMachineManager.cs
@@ -173,7 +173,8 @@ namespace Mono.Debugger.Soft
 			}
 
 			if (con_sock != null) {
-				con_sock.Disconnect (false);
+				if (con_sock.Connected)
+					con_sock.Disconnect (false);
 				con_sock.Close ();
 			}