diff --git a/components/script/dom/htmllinkelement.rs b/components/script/dom/htmllinkelement.rs
index ed6754afde6..ea5c25d8d46 100644
--- a/components/script/dom/htmllinkelement.rs
+++ b/components/script/dom/htmllinkelement.rs
@@ -226,6 +226,7 @@ impl HTMLLinkElement {
                 let listener = NetworkListener {
                     context: context,
                     script_chan: document.window().networking_task_source(),
+                    wrapper: Some(document.window().get_runnable_wrapper()),
                 };
                 let response_target = AsyncResponseTarget {
                     sender: action_sender,
diff --git a/components/script/dom/htmlmediaelement.rs b/components/script/dom/htmlmediaelement.rs
index 7cfe19ba789..877a98311c4 100644
--- a/components/script/dom/htmlmediaelement.rs
+++ b/components/script/dom/htmlmediaelement.rs
@@ -473,10 +473,12 @@ impl HTMLMediaElement {
             // 4.2
             let context = Arc::new(Mutex::new(HTMLMediaElementContext::new(self, url.clone())));
             let (action_sender, action_receiver) = ipc::channel().unwrap();
-            let script_chan = window_from_node(self).networking_task_source();
+            let window = window_from_node(self);
+            let script_chan = window.networking_task_source();
             let listener = box NetworkListener {
                 context: context,
                 script_chan: script_chan,
+                wrapper: Some(window.get_runnable_wrapper()),
             };
 
             let response_target = AsyncResponseTarget {
diff --git a/components/script/dom/htmlscriptelement.rs b/components/script/dom/htmlscriptelement.rs
index e4ce7fb068f..2d10e5f43d8 100644
--- a/components/script/dom/htmlscriptelement.rs
+++ b/components/script/dom/htmlscriptelement.rs
@@ -308,6 +308,7 @@ impl HTMLScriptElement {
                 let listener = NetworkListener {
                     context: context,
                     script_chan: doc.window().networking_task_source(),
+                    wrapper: Some(doc.window().get_runnable_wrapper()),
                 };
                 let response_target = AsyncResponseTarget {
                     sender: action_sender,
diff --git a/components/script/dom/xmlhttprequest.rs b/components/script/dom/xmlhttprequest.rs
index e76bbd0c7b3..148a51c8c6b 100644
--- a/components/script/dom/xmlhttprequest.rs
+++ b/components/script/dom/xmlhttprequest.rs
@@ -258,6 +258,7 @@ impl XMLHttpRequest {
         let listener = NetworkListener {
             context: context,
             script_chan: script_chan,
+            wrapper: None,
         };
         ROUTER.add_route(action_receiver.to_opaque(), box move |message| {
             listener.notify_fetch(message.to().unwrap());
diff --git a/components/script/network_listener.rs b/components/script/network_listener.rs
index 13aa26c25e4..5d37b025cca 100644
--- a/components/script/network_listener.rs
+++ b/components/script/network_listener.rs
@@ -6,7 +6,7 @@ use net_traits::{Action, AsyncResponseListener, FetchResponseListener};
 use net_traits::{FetchResponseMsg, ResponseAction};
 use script_runtime::ScriptThreadEventCategory::NetworkEvent;
 use script_runtime::{CommonScriptMsg, ScriptChan};
-use script_thread::Runnable;
+use script_thread::{Runnable, RunnableWrapper};
 use std::sync::{Arc, Mutex};
 
 /// An off-thread sink for async network event runnables. All such events are forwarded to
@@ -14,15 +14,25 @@ use std::sync::{Arc, Mutex};
 pub struct NetworkListener<Listener: PreInvoke + Send + 'static> {
     pub context: Arc<Mutex<Listener>>,
     pub script_chan: Box<ScriptChan + Send>,
+    pub wrapper: Option<RunnableWrapper>,
 }
 
 impl<Listener: PreInvoke + Send + 'static> NetworkListener<Listener> {
     pub fn notify<A: Action<Listener> + Send + 'static>(&self, action: A) {
-        if let Err(err) = self.script_chan.send(CommonScriptMsg::RunnableMsg(NetworkEvent, box ListenerRunnable {
+        let runnable = ListenerRunnable {
             context: self.context.clone(),
             action: action,
-        })) {
-            warn!("failed to deliver network data: {:?}", err);
+        };
+        if let Some(ref wrapper) = self.wrapper {
+            if let Err(err) = self.script_chan.send(
+                CommonScriptMsg::RunnableMsg(NetworkEvent, wrapper.wrap_runnable(runnable))) {
+                warn!("failed to deliver network data: {:?}", err);
+            }
+        } else {
+            if let Err(err) = self.script_chan.send(
+                CommonScriptMsg::RunnableMsg(NetworkEvent, box runnable)) {
+                warn!("failed to deliver network data: {:?}", err);
+            }
         }
     }
 }
diff --git a/components/script/script_thread.rs b/components/script/script_thread.rs
index 8a7fc82f52e..e115d086956 100644
--- a/components/script/script_thread.rs
+++ b/components/script/script_thread.rs
@@ -2055,6 +2055,7 @@ impl ScriptThread {
         let listener = NetworkListener {
             context: context,
             script_chan: self.chan.clone(),
+            wrapper: None,
         };
         ROUTER.add_route(action_receiver.to_opaque(), box move |message| {
             listener.notify_action(message.to().unwrap());