diff --git a/components/layout/layout_task.rs b/components/layout/layout_task.rs
index 505676e126b..e99768b28d4 100644
--- a/components/layout/layout_task.rs
+++ b/components/layout/layout_task.rs
@@ -1281,11 +1281,7 @@ impl LayoutTask {
         }
 
         // Tell script that we're done.
-        //
-        // FIXME(pcwalton): This should probably be *one* channel, but we can't fix this without
-        // either select or a filtered recv() that only looks for messages of a given type.
         data.script_join_chan.send(()).unwrap();
-        data.script_chan.send(ConstellationControlMsg::ReflowComplete(self.id, data.id)).unwrap();
     }
 
     fn set_visible_rects<'a>(&'a self,
diff --git a/components/script/script_task.rs b/components/script/script_task.rs
index 98431ab1330..8216cbfbacf 100644
--- a/components/script/script_task.rs
+++ b/components/script/script_task.rs
@@ -935,8 +935,6 @@ impl ScriptTask {
                 self.handle_navigate(pipeline_id, Some(subpage_id), load_data),
             ConstellationControlMsg::SendEvent(id, event) =>
                 self.handle_event(id, event),
-            ConstellationControlMsg::ReflowComplete(_id, _reflow_id) =>
-                (),
             ConstellationControlMsg::ResizeInactive(id, new_size) =>
                 self.handle_resize_inactive_msg(id, new_size),
             ConstellationControlMsg::Viewport(..) =>
diff --git a/components/script_traits/lib.rs b/components/script_traits/lib.rs
index 3c04fa36dda..6ed68b92dce 100644
--- a/components/script_traits/lib.rs
+++ b/components/script_traits/lib.rs
@@ -118,8 +118,6 @@ pub enum ConstellationControlMsg {
     ExitPipeline(PipelineId, PipelineExitType),
     /// Sends a DOM event.
     SendEvent(PipelineId, CompositorEvent),
-    /// Notifies script that reflow is finished.
-    ReflowComplete(PipelineId, u32),
     /// Notifies script of the viewport.
     Viewport(PipelineId, Rect<f32>),
     /// Requests that the script task immediately send the constellation the title of a pipeline.