diff --git a/src/runtime2/communication.rs b/src/runtime2/communication.rs
index c092fc99311d9c12835221b9707fe1e20b6827be..cebb7b67d319eb1fb2106c9ac06857d5a575659f 100644
--- a/src/runtime2/communication.rs
+++ b/src/runtime2/communication.rs
@@ -17,11 +17,6 @@ impl PortId {
     }
 }
 
-pub struct CompPortIds {
-    pub comp: CompId,
-    pub port: PortId,
-}
-
 #[derive(Debug, PartialEq, Eq, Clone, Copy)]
 pub enum PortKind {
     Putter,
@@ -202,6 +197,7 @@ pub enum Message {
     Data(DataMessage),
     Sync(SyncMessage),
     Control(ControlMessage),
+    Poll,
 }
 
 impl Message {
@@ -213,6 +209,8 @@ impl Message {
                 return v.target_port_id,
             Message::Sync(_) =>
                 return None,
+            Message::Poll =>
+                return None,
         }
     }
 
@@ -223,6 +221,7 @@ impl Message {
             Message::Control(v) =>
                 v.target_port_id = Some(port_id),
             Message::Sync(_) => unreachable!(), // should never be called for this message type
+            Message::Poll => unreachable!(),
         }
     }
 }