--- a/gfx/webrender_bindings/src/bindings.rs
+++ b/gfx/webrender_bindings/src/bindings.rs
@@ -828,17 +828,20 @@ pub extern "C" fn wr_api_add_external_im
 #[no_mangle]
 pub extern "C" fn wr_api_update_image(api: &mut RenderApi,
                                       key: ImageKey,
                                       descriptor: &WrImageDescriptor,
                                       bytes: ByteSlice) {
     assert!(unsafe { is_in_compositor_thread() });
     let copied_bytes = bytes.as_slice().to_owned();
 
-    api.update_image(key, descriptor.to_descriptor(), copied_bytes, None);
+    api.update_image(key,
+                     descriptor.to_descriptor(),
+                     ImageData::new(copied_bytes),
+                     None);
 }
 
 #[no_mangle]
 pub extern "C" fn wr_api_delete_image(api: &mut RenderApi, key: ImageKey) {
     assert!(unsafe { is_in_compositor_thread() });
     api.delete_image(key)
 }