diff --git a/std/std.internet.pdl b/std/std.internet.pdl
index 9650baee4fa36a7b6f62e7e71c1f3d753a2132d8..d61d81535897752b94d57a1e51e2aea85b9eecb7 100644
--- a/std/std.internet.pdl
+++ b/std/std.internet.pdl
@@ -1,6 +1,6 @@
 #module std.internet
 
-union Cmd {
+union ClientCmd {
     Send(u8[]),
     Receive,
     Finish,
@@ -11,11 +11,16 @@ comp tcp_client(u8[] ip, u16 port, in<Cmd> cmds, out<u8[]> rx) {
     #builtin
 }
 
+union ListenerCmd {
+    Accept,
+    Shutdown,
+}
+
 struct TcpConnection {
     out<Cmd> tx,
     in<u8[]> rx,
 }
 
-/* comp tcp_listener(u8[] ip, u16 port, out<TcpConnection> rx) {
+/* comp tcp_listener(u8[] ip, u16 port, in<ListenerCmd> cmds, out<TcpConnection> rx) {
     #builtin
 } */
\ No newline at end of file