diff --git a/src/runtime2/communication.rs b/src/runtime2/communication.rs
index 4a50333075fba025712e1fc6790f61b93c6035de..c092fc99311d9c12835221b9707fe1e20b6827be 100644
--- a/src/runtime2/communication.rs
+++ b/src/runtime2/communication.rs
@@ -61,11 +61,13 @@ pub struct DataMessage {
     pub content: ValueGroup,
 }
 
+#[derive(Debug)]
 pub enum PortAnnotationKind {
     Getter(PortAnnotationGetter),
     Putter(PortAnnotationPutter),
 }
 
+#[derive(Debug)]
 pub struct PortAnnotationGetter {
     pub self_comp_id: CompId,
     pub self_port_id: PortId,
@@ -73,6 +75,7 @@ pub struct PortAnnotationGetter {
     pub peer_port_id: PortId,
 }
 
+#[derive(Debug)]
 pub struct PortAnnotationPutter {
     pub self_comp_id: CompId,
     pub self_port_id: PortId,