diff --git a/components/layout/layout_thread.rs b/components/layout/layout_thread.rs
index fbc1cd26daf..98aebbcf47f 100644
--- a/components/layout/layout_thread.rs
+++ b/components/layout/layout_thread.rs
@@ -855,19 +855,7 @@ impl LayoutThread {
             flow::mut_base(flow_ref::deref_mut(layout_root)).clip =
                 ClippingRegion::from_rect(&data.page_clip_rect);
 
-            match (&mut self.parallel_traversal, opts::get().parallel_display_list_building) {
-                (&mut Some(ref mut traversal), true) => {
-                    parallel::build_display_list_for_subtree(layout_root,
-                                                             metadata,
-                                                             sender,
-                                                             shared_layout_context,
-                                                             traversal);
-                }
-                _ => {
-                    sequential::build_display_list_for_subtree(layout_root,
-                                                               shared_layout_context);
-                }
-            }
+            sequential::build_display_list_for_subtree(layout_root, shared_layout_context);
 
             if data.goal == ReflowGoal::ForDisplay {
                 debug!("Done building display list.");
diff --git a/components/layout/parallel.rs b/components/layout/parallel.rs
index 4ea427b11ee..39986d86580 100644
--- a/components/layout/parallel.rs
+++ b/components/layout/parallel.rs
@@ -17,8 +17,8 @@ use std::sync::atomic::{AtomicIsize, Ordering};
 use style::dom::{TNode, UnsafeNode};
 use style::parallel::{CHUNK_SIZE, WorkQueueData};
 use style::parallel::{run_queue_with_custom_work_data_type};
-use traversal::{AssignBSizesAndStoreOverflow, AssignISizes, BubbleISizes};
-use traversal::{BuildDisplayList, ComputeAbsolutePositions, PostorderNodeMutTraversal};
+use traversal::AssignBSizesAndStoreOverflow;
+use traversal::{AssignISizes, BubbleISizes, PostorderNodeMutTraversal};
 use util::opts;
 use util::workqueue::{WorkQueue, WorkUnit, WorkerProxy};
 
@@ -200,23 +200,6 @@ impl<'a> ParallelPreorderFlowTraversal for AssignISizes<'a> {
 
 impl<'a> ParallelPostorderFlowTraversal for AssignBSizesAndStoreOverflow<'a> {}
 
-impl<'a> ParallelPreorderFlowTraversal for ComputeAbsolutePositions<'a> {
-    fn run_parallel(&self,
-                    unsafe_flows: UnsafeFlowList,
-                    proxy: &mut WorkerProxy<SharedLayoutContext, UnsafeFlowList>) {
-        self.run_parallel_helper(unsafe_flows,
-                                 proxy,
-                                 compute_absolute_positions,
-                                 build_display_list)
-    }
-
-    fn should_record_thread_ids(&self) -> bool {
-        false
-    }
-}
-
-impl<'a> ParallelPostorderFlowTraversal for BuildDisplayList<'a> {}
-
 fn assign_inline_sizes(unsafe_flows: UnsafeFlowList,
                        proxy: &mut WorkerProxy<SharedLayoutContext, UnsafeFlowList>) {
     let shared_layout_context = proxy.user_data();
@@ -237,28 +220,6 @@ fn assign_block_sizes_and_store_overflow(
     assign_block_sizes_traversal.run_parallel(unsafe_flow)
 }
 
-fn compute_absolute_positions(
-        unsafe_flows: UnsafeFlowList,
-        proxy: &mut WorkerProxy<SharedLayoutContext, UnsafeFlowList>) {
-    let shared_layout_context = proxy.user_data();
-    let layout_context = LayoutContext::new(shared_layout_context);
-    let compute_absolute_positions_traversal = ComputeAbsolutePositions {
-        layout_context: &layout_context,
-    };
-    compute_absolute_positions_traversal.run_parallel(unsafe_flows, proxy);
-}
-
-fn build_display_list(unsafe_flow: UnsafeFlow,
-                      shared_layout_context: &SharedLayoutContext) {
-    let layout_context = LayoutContext::new(shared_layout_context);
-
-    let build_display_list_traversal = BuildDisplayList {
-        layout_context: &layout_context,
-    };
-
-    build_display_list_traversal.run_parallel(unsafe_flow);
-}
-
 pub fn traverse_flow_tree_preorder(
         root: &mut FlowRef,
         profiler_metadata: Option<TimerMetadata>,
@@ -281,20 +242,3 @@ pub fn traverse_flow_tree_preorder(
         });
     }, shared_layout_context);
 }
-
-pub fn build_display_list_for_subtree(
-        root: &mut FlowRef,
-        profiler_metadata: Option<TimerMetadata>,
-        time_profiler_chan: time::ProfilerChan,
-        shared_layout_context: &SharedLayoutContext,
-        queue: &mut WorkQueue<SharedLayoutContext, WorkQueueData>) {
-    run_queue_with_custom_work_data_type(queue, |queue| {
-        profile(time::ProfilerCategory::LayoutParallelWarmup, profiler_metadata,
-                time_profiler_chan, || {
-            queue.push(WorkUnit {
-                fun: compute_absolute_positions,
-                data: (box vec![mut_owned_flow_to_unsafe_flow(root)], 0),
-            })
-        });
-    }, shared_layout_context);
-}
diff --git a/components/util/opts.rs b/components/util/opts.rs
index d2dbdc1c382..90135fb78ca 100644
--- a/components/util/opts.rs
+++ b/components/util/opts.rs
@@ -169,9 +169,6 @@ pub struct Opts {
     /// Whether Style Sharing Cache is used
     pub disable_share_style_cache: bool,
 
-    /// Whether to run absolute position calculation and display list construction in parallel.
-    pub parallel_display_list_building: bool,
-
     /// Translate mouse input into touch events.
     pub convert_mouse_to_touch: bool,
 
@@ -263,9 +260,6 @@ pub struct DebugOptions {
     /// Disable the style sharing cache.
     pub disable_share_style_cache: bool,
 
-    /// Build display lists in parallel.
-    pub parallel_display_list_building: bool,
-
     /// Translate mouse input into touch events.
     pub convert_mouse_to_touch: bool,
 
@@ -316,7 +310,6 @@ impl DebugOptions {
                 "trace-layout" => debug_options.trace_layout = true,
                 "validate-display-list-geometry" => debug_options.validate_display_list_geometry = true,
                 "disable-share-style-cache" => debug_options.disable_share_style_cache = true,
-                "parallel-display-list-building" => debug_options.parallel_display_list_building = true,
                 "convert-mouse-to-touch" => debug_options.convert_mouse_to_touch = true,
                 "replace-surrogates" => debug_options.replace_surrogates = true,
                 "gc-profile" => debug_options.gc_profile = true,
@@ -497,7 +490,6 @@ pub fn default_opts() -> Opts {
         profile_script_events: false,
         profile_heartbeats: false,
         disable_share_style_cache: false,
-        parallel_display_list_building: false,
         convert_mouse_to_touch: false,
         exit_after_load: false,
         no_native_titlebar: false,
@@ -737,7 +729,6 @@ pub fn from_cmdline_args(args: &[String]) -> ArgumentParsingResult {
         relayout_event: debug_options.relayout_event,
         validate_display_list_geometry: debug_options.validate_display_list_geometry,
         disable_share_style_cache: debug_options.disable_share_style_cache,
-        parallel_display_list_building: debug_options.parallel_display_list_building,
         convert_mouse_to_touch: debug_options.convert_mouse_to_touch,
         exit_after_load: opt_match.opt_present("x"),
         no_native_titlebar: opt_match.opt_present("b"),