diff --git a/components/compositing/pipeline.rs b/components/compositing/pipeline.rs
index 51b4a20ec9c..0215ac4cade 100644
--- a/components/compositing/pipeline.rs
+++ b/components/compositing/pipeline.rs
@@ -248,13 +248,13 @@ impl Pipeline {
         let _ = self.chrome_to_paint_chan.send(ChromeToPaintMsg::PaintPermissionRevoked);
     }
 
-    pub fn exit(&self, exit_type: PipelineExitType) {
+    pub fn exit(&self, _: PipelineExitType) {
         debug!("pipeline {:?} exiting", self.id);
 
         // Script task handles shutting down layout, and layout handles shutting down the painter.
         // For now, if the script task has failed, we give up on clean shutdown.
         if self.script_chan
-               .send(ConstellationControlMsg::ExitPipeline(self.id, exit_type))
+               .send(ConstellationControlMsg::ExitPipeline(self.id))
                .is_ok() {
             // Wait until all slave tasks have terminated and run destructors
             // NOTE: We don't wait for script task as we don't always own it
@@ -275,9 +275,7 @@ impl Pipeline {
     }
 
     pub fn force_exit(&self) {
-        let _ = self.script_chan.send(
-            ConstellationControlMsg::ExitPipeline(self.id,
-                                                  PipelineExitType::PipelineOnly)).unwrap();
+        let _ = self.script_chan.send(ConstellationControlMsg::ExitPipeline(self.id)).unwrap();
         let _ = self.chrome_to_paint_chan.send(ChromeToPaintMsg::Exit(
                     PipelineExitType::PipelineOnly));
         let LayoutControlChan(ref layout_channel) = self.layout_chan;
diff --git a/components/script/script_task.rs b/components/script/script_task.rs
index 3949f7f2b8a..d463d1d8107 100644
--- a/components/script/script_task.rs
+++ b/components/script/script_task.rs
@@ -839,7 +839,7 @@ impl ScriptTask {
 
             let result = self.profile_event(category, move || {
                 match msg {
-                    MixedMessage::FromConstellation(ConstellationControlMsg::ExitPipeline(id, _)) => {
+                    MixedMessage::FromConstellation(ConstellationControlMsg::ExitPipeline(id)) => {
                         if self.handle_exit_pipeline_msg(id) {
                             return Some(false)
                         }
diff --git a/components/script_traits/lib.rs b/components/script_traits/lib.rs
index 2db79ff93d3..1adf0c6602d 100644
--- a/components/script_traits/lib.rs
+++ b/components/script_traits/lib.rs
@@ -115,7 +115,7 @@ pub enum ConstellationControlMsg {
     /// Notifies script that window has been resized but to not take immediate action.
     ResizeInactive(PipelineId, WindowSizeData),
     /// Notifies the script that a pipeline should be closed.
-    ExitPipeline(PipelineId, PipelineExitType),
+    ExitPipeline(PipelineId),
     /// Sends a DOM event.
     SendEvent(PipelineId, CompositorEvent),
     /// Notifies script of the viewport.