diff --git a/components/script/dom/serviceworkerregistration.rs b/components/script/dom/serviceworkerregistration.rs
index 6daec5d9647..f7c47b8ecec 100644
--- a/components/script/dom/serviceworkerregistration.rs
+++ b/components/script/dom/serviceworkerregistration.rs
@@ -60,7 +60,6 @@ impl ServiceWorkerRegistration {
         let init = prepare_workerscope_init(global, None);
         ScopeThings {
             script_url: script_url,
-            pipeline_id: global.pipeline_id(),
             init: init,
             worker_load_origin: worker_load_origin,
             devtools_chan: global.devtools_chan(),
diff --git a/components/script/serviceworker_manager.rs b/components/script/serviceworker_manager.rs
index 3ce26a7693e..3920b0cd62b 100644
--- a/components/script/serviceworker_manager.rs
+++ b/components/script/serviceworker_manager.rs
@@ -87,7 +87,7 @@ impl ServiceWorkerManager {
                     title: title,
                     url: scope_things.script_url.clone(),
                 };
-                let _ = chan.send(ScriptToDevtoolsControlMsg::NewGlobal((scope_things.pipeline_id,
+                let _ = chan.send(ScriptToDevtoolsControlMsg::NewGlobal((scope_things.init.pipeline_id,
                                                                          Some(scope_things.worker_id)),
                                                                          devtools_sender,
                                                                          page_info));
diff --git a/components/script_traits/script_msg.rs b/components/script_traits/script_msg.rs
index c3c777bb9f7..52f5fdd1188 100644
--- a/components/script_traits/script_msg.rs
+++ b/components/script_traits/script_msg.rs
@@ -151,8 +151,6 @@ pub enum ScriptMsg {
 pub struct ScopeThings {
     /// script resource url
     pub script_url: Url,
-    /// pipeline which requested the activation
-    pub pipeline_id: PipelineId,
     /// network load origin of the resource
     pub worker_load_origin: WorkerScriptLoadOrigin,
     /// base resources required to create worker global scopes