diff --git a/components/script/dom/bindings/trace.rs b/components/script/dom/bindings/trace.rs
index 37f147c4693..ddf16b9c2ab 100644
--- a/components/script/dom/bindings/trace.rs
+++ b/components/script/dom/bindings/trace.rs
@@ -41,6 +41,7 @@ use script_traits::ScriptControlChan;
 use std::collections::hashmap::HashMap;
 use collections::hash::Hash;
 use style::PropertyDeclarationBlock;
+use std::comm::{Receiver, Sender};
 use string_cache::{Atom, Namespace};
 
 impl<T: Reflectable> JSTraceable for JS<T> {
@@ -238,3 +239,16 @@ impl<'a> JSTraceable for &'a str {
     }
 }
 
+impl<T> JSTraceable for Sender<T> {
+    #[inline]
+    fn trace(&self, _: *mut JSTracer) {
+        // Do nothing
+    }
+}
+
+impl<T> JSTraceable for Receiver<T> {
+    #[inline]
+    fn trace(&self, _: *mut JSTracer) {
+        // Do nothing
+    }
+}
diff --git a/components/script/dom/dedicatedworkerglobalscope.rs b/components/script/dom/dedicatedworkerglobalscope.rs
index d043bde2b62..cd873c39930 100644
--- a/components/script/dom/dedicatedworkerglobalscope.rs
+++ b/components/script/dom/dedicatedworkerglobalscope.rs
@@ -9,7 +9,6 @@ use dom::bindings::codegen::InheritTypes::DedicatedWorkerGlobalScopeDerived;
 use dom::bindings::codegen::InheritTypes::{EventTargetCast, WorkerGlobalScopeCast};
 use dom::bindings::global;
 use dom::bindings::js::{JSRef, Temporary, RootCollection};
-use dom::bindings::trace::Untraceable;
 use dom::bindings::utils::{Reflectable, Reflector};
 use dom::eventtarget::{EventTarget, EventTargetHelpers};
 use dom::eventtarget::WorkerGlobalScopeTypeId;
@@ -40,10 +39,10 @@ use url::Url;
 #[must_root]
 pub struct DedicatedWorkerGlobalScope {
     workerglobalscope: WorkerGlobalScope,
-    receiver: Untraceable<Receiver<ScriptMsg>>,
+    receiver: Receiver<ScriptMsg>,
     /// Sender to the parent thread.
     parent_sender: ScriptChan,
-    worker: Untraceable<TrustedWorkerAddress>,
+    worker: TrustedWorkerAddress,
 }
 
 impl DedicatedWorkerGlobalScope {
@@ -59,9 +58,9 @@ impl DedicatedWorkerGlobalScope {
             workerglobalscope: WorkerGlobalScope::new_inherited(
                 DedicatedGlobalScope, worker_url, cx, resource_task,
                 own_sender),
-            receiver: Untraceable::new(receiver),
+            receiver: receiver,
             parent_sender: parent_sender,
-            worker: Untraceable::new(worker),
+            worker: worker,
         }
     }
 
@@ -120,7 +119,7 @@ impl DedicatedWorkerGlobalScope {
             let target: JSRef<EventTarget> =
                 EventTargetCast::from_ref(*global);
             loop {
-                match global.receiver.deref().recv_opt() {
+                match global.receiver.recv_opt() {
                     Ok(DOMMessage(data, nbytes)) => {
                         let mut message = UndefinedValue();
                         unsafe {
@@ -160,7 +159,7 @@ impl<'a> DedicatedWorkerGlobalScopeMethods for JSRef<'a, DedicatedWorkerGlobalSc
         }
 
         let ScriptChan(ref sender) = self.parent_sender;
-        sender.send(WorkerPostMessage(*self.worker, data, nbytes));
+        sender.send(WorkerPostMessage(self.worker, data, nbytes));
     }
 
     fn GetOnmessage(self) -> Option<EventHandlerNonNull> {
@@ -181,7 +180,7 @@ trait PrivateDedicatedWorkerGlobalScopeHelpers {
 impl<'a> PrivateDedicatedWorkerGlobalScopeHelpers for JSRef<'a, DedicatedWorkerGlobalScope> {
     fn delayed_release_worker(self) {
         let ScriptChan(ref sender) = self.parent_sender;
-        sender.send(WorkerRelease(*self.worker));
+        sender.send(WorkerRelease(self.worker));
     }
 }
 
diff --git a/components/script/dom/worker.rs b/components/script/dom/worker.rs
index 04bac9e2c9a..4941a1c6a35 100644
--- a/components/script/dom/worker.rs
+++ b/components/script/dom/worker.rs
@@ -9,6 +9,7 @@ use dom::bindings::codegen::InheritTypes::EventTargetCast;
 use dom::bindings::error::{Fallible, Syntax};
 use dom::bindings::global::{GlobalRef, GlobalField};
 use dom::bindings::js::{JS, JSRef, Temporary};
+use dom::bindings::trace::JSTraceable;
 use dom::bindings::utils::{Reflectable, Reflector, reflect_dom_object};
 use dom::dedicatedworkerglobalscope::DedicatedWorkerGlobalScope;
 use dom::eventtarget::{EventTarget, EventTargetHelpers, WorkerTypeId};
@@ -18,7 +19,7 @@ use script_task::{ScriptChan, DOMMessage};
 use servo_util::str::DOMString;
 
 use js::glue::JS_STRUCTURED_CLONE_VERSION;
-use js::jsapi::{JSContext, JS_AddObjectRoot, JS_RemoveObjectRoot};
+use js::jsapi::{JSContext, JS_AddObjectRoot, JS_RemoveObjectRoot, JSTracer};
 use js::jsapi::{JS_ReadStructuredClone, JS_WriteStructuredClone};
 use js::jsval::{JSVal, UndefinedValue};
 use url::UrlParser;
@@ -28,6 +29,7 @@ use std::cell::Cell;
 use std::ptr;
 
 pub struct TrustedWorkerAddress(pub *const c_void);
+untraceable!(TrustedWorkerAddress)
 
 #[jstraceable]
 #[must_root]