diff --git a/src/components/main/layout/context.rs b/src/components/main/layout/context.rs
index bcb89fe5a88..6d0391aaa85 100644
--- a/src/components/main/layout/context.rs
+++ b/src/components/main/layout/context.rs
@@ -55,7 +55,7 @@ local_data_key!(style_sharing_candidate_cache: *mut StyleSharingCandidateCache)
 #[deriving(Clone)]
 pub struct LayoutContext {
     /// The local image cache.
-    pub image_cache: Arc<Mutex<Box<LocalImageCache>>>,
+    pub image_cache: Arc<Mutex<LocalImageCache>>,
 
     /// The current screen size.
     pub screen_size: Size2D<Au>,
diff --git a/src/components/main/layout/fragment.rs b/src/components/main/layout/fragment.rs
index a6865ef759c..3ee3f7586c9 100644
--- a/src/components/main/layout/fragment.rs
+++ b/src/components/main/layout/fragment.rs
@@ -134,7 +134,7 @@ impl ImageFragmentInfo {
     /// me.
     pub fn new(node: &ThreadSafeLayoutNode,
                image_url: Url,
-               local_image_cache: Arc<Mutex<Box<LocalImageCache>>>)
+               local_image_cache: Arc<Mutex<LocalImageCache>>)
                -> ImageFragmentInfo {
         fn convert_length(node: &ThreadSafeLayoutNode, name: &str) -> Option<Au> {
             let element = node.as_element();
diff --git a/src/components/main/layout/layout_task.rs b/src/components/main/layout/layout_task.rs
index a486499556d..1bd7b939108 100644
--- a/src/components/main/layout/layout_task.rs
+++ b/src/components/main/layout/layout_task.rs
@@ -85,7 +85,7 @@ pub struct LayoutTask {
     pub image_cache_task: ImageCacheTask,
 
     /// The local image cache.
-    pub local_image_cache: Arc<Mutex<Box<LocalImageCache>>>,
+    pub local_image_cache: Arc<Mutex<LocalImageCache>>,
 
     /// The size of the viewport.
     pub screen_size: Size2D<Au>,
@@ -312,7 +312,7 @@ impl LayoutTask {
            opts: &Opts,
            profiler_chan: ProfilerChan)
            -> LayoutTask {
-        let local_image_cache = Arc::new(Mutex::new(box LocalImageCache(image_cache_task.clone())));
+        let local_image_cache = Arc::new(Mutex::new(LocalImageCache(image_cache_task.clone())));
         let screen_size = Size2D(Au(0), Au(0));
         let parallel_traversal = if opts.layout_threads != 1 {
             Some(WorkQueue::new("LayoutWorker", opts.layout_threads, ptr::mut_null()))
diff --git a/src/components/net/image/holder.rs b/src/components/net/image/holder.rs
index 671dbb4368c..c739229e9a5 100644
--- a/src/components/net/image/holder.rs
+++ b/src/components/net/image/holder.rs
@@ -22,11 +22,11 @@ pub struct ImageHolder {
     url: Url,
     image: Option<Arc<Box<Image>>>,
     cached_size: Size2D<int>,
-    local_image_cache: Arc<Mutex<Box<LocalImageCache>>>,
+    local_image_cache: Arc<Mutex<LocalImageCache>>,
 }
 
 impl ImageHolder {
-    pub fn new(url: Url, local_image_cache: Arc<Mutex<Box<LocalImageCache>>>) -> ImageHolder {
+    pub fn new(url: Url, local_image_cache: Arc<Mutex<LocalImageCache>>) -> ImageHolder {
         debug!("ImageHolder::new() {}", url.to_str());
         let holder = ImageHolder {
             url: url,