diff --git a/Model/model.xml b/Model/model.xml
index fc079b7..09861c5 100644
--- a/Model/model.xml
+++ b/Model/model.xml
@@ -88,5 +88,5 @@ Network4 = Network(0);
 Host1Handshake = Host_Handshake(1,2,0);
 Host2Handshake = Host_Handshake(2,1,0);
 
-system Network1, Network2, Network3,Host1Handshake,Host2Handshake;
+system Network1, Network2, Network3, Network4, Host1Handshake,Host2Handshake;
 </system></nta>
\ No newline at end of file