diff --git a/pkg/lib/cockpit/_internal/transport.ts b/pkg/lib/cockpit/_internal/transport.ts
index 5bed27a1316..eb920ceb60a 100644
--- a/pkg/lib/cockpit/_internal/transport.ts
+++ b/pkg/lib/cockpit/_internal/transport.ts
@@ -198,7 +198,7 @@ class Transport extends EventEmitter<{ ready(): void }> {
                 transport_debug("recv control:", control);
             } else {
                 payload = message.substring(nl + 1);
-                transport_debug("recv text message:", control, payload);
+                transport_debug("recv text message:", channel, payload);
             }
         }