diff --git a/components/layout/construct.rs b/components/layout/construct.rs
index dd6d5ff9930..f92a4211fcb 100644
--- a/components/layout/construct.rs
+++ b/components/layout/construct.rs
@@ -297,7 +297,7 @@ impl<'a, ConcreteThreadSafeLayoutNode: ThreadSafeLayoutNode>
         let specific_fragment_info = match node.type_id() {
             Some(NodeTypeId::Element(ElementTypeId::HTMLElement(
                         HTMLElementTypeId::HTMLIFrameElement))) => {
-                SpecificFragmentInfo::Iframe(box IframeFragmentInfo::new(node))
+                SpecificFragmentInfo::Iframe(IframeFragmentInfo::new(node))
             }
             Some(NodeTypeId::Element(ElementTypeId::HTMLElement(
                         HTMLElementTypeId::HTMLImageElement))) => {
diff --git a/components/layout/fragment.rs b/components/layout/fragment.rs
index 021efa31a08..e5e31959607 100644
--- a/components/layout/fragment.rs
+++ b/components/layout/fragment.rs
@@ -145,7 +145,7 @@ pub enum SpecificFragmentInfo {
     /// content resolution phase (e.g. an ordered list item marker).
     GeneratedContent(Box<GeneratedContentInfo>),
 
-    Iframe(Box<IframeFragmentInfo>),
+    Iframe(IframeFragmentInfo),
     Image(Box<ImageFragmentInfo>),
     Canvas(Box<CanvasFragmentInfo>),