diff --git a/components/devtools/actors/browsing_context.rs b/components/devtools/actors/browsing_context.rs
index 2e95fe9ad47..0407652e164 100644
--- a/components/devtools/actors/browsing_context.rs
+++ b/components/devtools/actors/browsing_context.rs
@@ -63,9 +63,6 @@ struct ListWorkersReply {
 #[derive(Serialize)]
 struct WorkerMsg {
     id: u32,
-    url: String,
-    title: String,
-    parentID: u32,
 }
 
 #[derive(Serialize)]