diff --git a/components/script/dom/htmlcanvaselement.rs b/components/script/dom/htmlcanvaselement.rs
index c2396700a68..09cd40022ef 100644
--- a/components/script/dom/htmlcanvaselement.rs
+++ b/components/script/dom/htmlcanvaselement.rs
@@ -8,7 +8,6 @@ use dom::bindings::codegen::InheritTypes::HTMLCanvasElementDerived;
 use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLElementCast};
 use dom::bindings::global::Window;
 use dom::bindings::js::{MutNullableJS, JSRef, Temporary, OptionalSettable};
-use dom::bindings::trace::Traceable;
 use dom::bindings::utils::{Reflectable, Reflector};
 use dom::canvasrenderingcontext2d::CanvasRenderingContext2D;
 use dom::document::Document;
@@ -33,9 +32,9 @@ static DefaultHeight: u32 = 150;
 #[must_root]
 pub struct HTMLCanvasElement {
     pub htmlelement: HTMLElement,
-    context: Traceable<MutNullableJS<CanvasRenderingContext2D>>,
-    width: Traceable<Cell<u32>>,
-    height: Traceable<Cell<u32>>,
+    context: MutNullableJS<CanvasRenderingContext2D>,
+    width: Cell<u32>,
+    height: Cell<u32>,
 }
 
 impl HTMLCanvasElementDerived for EventTarget {
@@ -48,9 +47,9 @@ impl HTMLCanvasElement {
     fn new_inherited(localName: DOMString, document: JSRef<Document>) -> HTMLCanvasElement {
         HTMLCanvasElement {
             htmlelement: HTMLElement::new_inherited(HTMLCanvasElementTypeId, localName, document),
-            context: Traceable::new(Default::default()),
-            width: Traceable::new(Cell::new(DefaultWidth)),
-            height: Traceable::new(Cell::new(DefaultHeight)),
+            context: Default::default(),
+            width: Cell::new(DefaultWidth),
+            height: Cell::new(DefaultHeight),
         }
     }