1 files changed, 3 insertions, 3 deletions
diff --git a/components/script/dom/htmlcanvaselement.rs b/components/script/dom/htmlcanvaselement.rs
index f4a13836eb1..c63ab1a9531 100644
--- a/components/script/dom/htmlcanvaselement.rs
+++ b/components/script/dom/htmlcanvaselement.rs
@@ -12,7 +12,6 @@ use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLContext
 use dom::bindings::codegen::UnionTypes::CanvasRenderingContext2DOrWebGLRenderingContext;
 use dom::bindings::conversions::ConversionResult;
 use dom::bindings::error::{Error, Fallible};
-use dom::bindings::global::GlobalRef;
 use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{HeapGCValue, JS, LayoutJS, Root};
 use dom::bindings::num::Finite;
@@ -20,6 +19,7 @@ use dom::bindings::str::DOMString;
 use dom::canvasrenderingcontext2d::{CanvasRenderingContext2D, LayoutCanvasRenderingContext2DHelpers};
 use dom::document::Document;
 use dom::element::{AttributeMutation, Element, RawLayoutElementHelpers};
+use dom::globalscope::GlobalScope;
 use dom::htmlelement::HTMLElement;
 use dom::node::{Node, window_from_node};
 use dom::virtualmethods::VirtualMethods;
@@ -142,7 +142,7 @@ impl HTMLCanvasElement {
         if self.context.borrow().is_none() {
             let window = window_from_node(self);
             let size = self.get_size();
-            let context = CanvasRenderingContext2D::new(GlobalRef::Window(window.r()), self, size);
+            let context = CanvasRenderingContext2D::new(window.upcast::<GlobalScope>(), self, size);
             *self.context.borrow_mut() = Some(CanvasContext::Context2d(JS::from_ref(&*context)));
         }
 
@@ -177,7 +177,7 @@ impl HTMLCanvasElement {
                 GLContextAttributes::default()
             };
 
-            let maybe_ctx = WebGLRenderingContext::new(GlobalRef::Window(window.r()), self, size, attrs);
+            let maybe_ctx = WebGLRenderingContext::new(window.upcast(), self, size, attrs);
 
             *self.context.borrow_mut() = maybe_ctx.map( |ctx| CanvasContext::WebGL(JS::from_ref(&*ctx)));
         }