diff --git a/components/net/filemanager_thread.rs b/components/net/filemanager_thread.rs
index 97807f3f01e..5c59a6aae8c 100644
--- a/components/net/filemanager_thread.rs
+++ b/components/net/filemanager_thread.rs
@@ -7,7 +7,7 @@ use mime_guess::guess_mime_type_opt;
 use net_traits::blob_url_store::{BlobBuf, BlobURLStoreError};
 use net_traits::filemanager_thread::{FileManagerResult, FileManagerThreadMsg, FileOrigin, FilterPattern};
 use net_traits::filemanager_thread::{FileManagerThreadError, ReadFileProgress, RelativePos, SelectedFile};
-use script_traits::ConstellationMsg;
+use script_traits::FileManagerMsg;
 #[cfg(any(target_os = "macos", target_os = "linux", target_os = "windows"))]
 use servo_config::opts;
 use servo_config::prefs::PREFS;
@@ -18,7 +18,6 @@ use std::ops::Index;
 use std::path::{Path, PathBuf};
 use std::sync::{Arc, RwLock};
 use std::sync::atomic::{self, AtomicBool, AtomicUsize, Ordering};
-use std::sync::mpsc::Sender;
 use std::thread;
 #[cfg(any(target_os = "macos", target_os = "linux", target_os = "windows"))]
 use url::Url;
@@ -63,12 +62,12 @@ enum FileImpl {
 
 #[derive(Clone)]
 pub struct FileManager {
-    constellation_chan: Sender<ConstellationMsg>,
+    constellation_chan: IpcSender<FileManagerMsg>,
     store: Arc<FileManagerStore>,
 }
 
 impl FileManager {
-    pub fn new(constellation_chan: Sender<ConstellationMsg>) -> FileManager {
+    pub fn new(constellation_chan: IpcSender<FileManagerMsg>) -> FileManager {
         FileManager {
             constellation_chan: constellation_chan,
             store: Arc::new(FileManagerStore::new()),
@@ -222,13 +221,13 @@ impl FileManagerStore {
     fn get_selected_files(&self,
                             patterns: Vec<FilterPattern>,
                             multiple_files: bool,
-                            constellation_chan: Sender<ConstellationMsg>) -> Option<Vec<String>> {
+                            constellation_chan: IpcSender<FileManagerMsg>) -> Option<Vec<String>> {
         if opts::get().headless {
             return None;
         }
 
         let (ipc_sender, ipc_receiver) = ipc::channel().expect("Failed to create IPC channel!");
-        let msg = ConstellationMsg::OpenFileSelectDialog(patterns, multiple_files, ipc_sender);
+        let msg = FileManagerMsg::OpenFileSelectDialog(patterns, multiple_files, ipc_sender);
 
         constellation_chan.send(msg).map(|_| ipc_receiver.recv().unwrap()).unwrap_or_default()
     }
@@ -238,7 +237,7 @@ impl FileManagerStore {
                     sender: IpcSender<FileManagerResult<SelectedFile>>,
                     origin: FileOrigin,
                     opt_test_path: Option<String>,
-                    constellation_chan: Sender<ConstellationMsg>) {
+                    constellation_chan: IpcSender<FileManagerMsg>) {
         // Check if the select_files preference is enabled
         // to ensure process-level security against compromised script;
         // Then try applying opt_test_path directly for testing convenience
@@ -266,7 +265,7 @@ impl FileManagerStore {
                     sender: IpcSender<FileManagerResult<Vec<SelectedFile>>>,
                     origin: FileOrigin,
                     opt_test_paths: Option<Vec<String>>,
-                    constellation_chan: Sender<ConstellationMsg>) {
+                    constellation_chan: IpcSender<FileManagerMsg>) {
         // Check if the select_files preference is enabled
         // to ensure process-level security against compromised script;
         // Then try applying opt_test_paths directly for testing convenience
diff --git a/components/net/resource_thread.rs b/components/net/resource_thread.rs
index 6030f30dea4..3f3e8c10843 100644
--- a/components/net/resource_thread.rs
+++ b/components/net/resource_thread.rs
@@ -28,7 +28,7 @@ use net_traits::storage_thread::StorageThreadMsg;
 use profile_traits::mem::{Report, ReportsChan, ReportKind};
 use profile_traits::mem::ProfilerChan as MemProfilerChan;
 use profile_traits::time::ProfilerChan;
-use script_traits::ConstellationMsg;
+use script_traits::FileManagerMsg;
 use serde::{Deserialize, Serialize};
 use serde_json;
 use servo_allocator;
@@ -42,7 +42,7 @@ use std::io::prelude::*;
 use std::ops::Deref;
 use std::path::{Path, PathBuf};
 use std::sync::{Arc, Mutex, RwLock};
-use std::sync::mpsc::{self, Sender};
+use std::sync::mpsc::Sender;
 use std::thread;
 use storage_thread::StorageThreadFactory;
 use websocket_loader;
@@ -53,7 +53,7 @@ pub fn new_resource_threads(user_agent: Cow<'static, str>,
                             time_profiler_chan: ProfilerChan,
                             mem_profiler_chan: MemProfilerChan,
                             config_dir: Option<PathBuf>)
-                            -> (ResourceThreads, ResourceThreads, Sender<Sender<ConstellationMsg>>) {
+                            -> (ResourceThreads, ResourceThreads, IpcSender<IpcSender<FileManagerMsg>>) {
     let (public_core, private_core, constellation_sender) = new_core_resource_thread(
         user_agent,
         devtools_chan,
@@ -73,11 +73,11 @@ pub fn new_core_resource_thread(user_agent: Cow<'static, str>,
                                 time_profiler_chan: ProfilerChan,
                                 mem_profiler_chan: MemProfilerChan,
                                 config_dir: Option<PathBuf>)
-                                -> (CoreResourceThread, CoreResourceThread, Sender<Sender<ConstellationMsg>>) {
+                                -> (CoreResourceThread, CoreResourceThread, IpcSender<IpcSender<FileManagerMsg>>) {
     let (public_setup_chan, public_setup_port) = ipc::channel().unwrap();
     let (private_setup_chan, private_setup_port) = ipc::channel().unwrap();
     let (report_chan, report_port) = ipc::channel().unwrap();
-    let (constellation_sender, constellation_receiver) = mpsc::channel();
+    let (constellation_sender, constellation_receiver) = ipc::channel().unwrap();
 
     thread::Builder::new().name("ResourceManager".to_owned()).spawn(move || {
         let constellation_chan = constellation_receiver.recv().unwrap();
@@ -377,7 +377,7 @@ impl CoreResourceManager {
     pub fn new(user_agent: Cow<'static, str>,
                devtools_channel: Option<Sender<DevtoolsControlMsg>>,
                _profiler_chan: ProfilerChan,
-               constellation_chan: Sender<ConstellationMsg>) -> CoreResourceManager {
+               constellation_chan: IpcSender<FileManagerMsg>) -> CoreResourceManager {
         CoreResourceManager {
             user_agent: user_agent,
             devtools_chan: devtools_channel,
diff --git a/components/servo/lib.rs b/components/servo/lib.rs
index 4fd94207b47..65449d0d9af 100644
--- a/components/servo/lib.rs
+++ b/components/servo/lib.rs
@@ -523,7 +523,7 @@ fn create_constellation(user_agent: Cow<'static, str>,
         webgl_threads,
         webvr_chan,
     };
-    let (constellation_chan, from_swmanager_sender) =
+    let (constellation_chan, from_swmanager_sender, from_filemanager_sender) =
         Constellation::<script_layout_interface::message::Msg,
                         layout_thread::LayoutThread,
                         script::script_thread::ScriptThread>::start(initial_state);
@@ -533,7 +533,7 @@ fn create_constellation(user_agent: Cow<'static, str>,
         webvr_constellation_sender.send(constellation_chan.clone()).unwrap();
     }
 
-    resource_constellation_sender.send(constellation_chan.clone()).unwrap();
+    resource_constellation_sender.send(from_filemanager_sender.clone()).unwrap();
 
     // channels to communicate with Service Worker Manager
     let sw_senders = SWManagerSenders {
diff --git a/ports/servo/browser.rs b/ports/servo/browser.rs
index afdaeb173c9..b1f2627fb68 100644
--- a/ports/servo/browser.rs
+++ b/ports/servo/browser.rs
@@ -18,6 +18,7 @@ use servo::servo_url::ServoUrl;
 use servo::webrender_api::ScrollLocation;
 use std::mem;
 use std::rc::Rc;
+#[cfg(any(target_os = "macos", target_os = "linux", target_os = "windows"))]
 use std::thread;
 use tinyfiledialogs;
 
@@ -344,7 +345,9 @@ fn platform_get_selected_devices(devices: Vec<String>, sender: IpcSender<Option<
 }
 
 #[cfg(any(target_os = "macos", target_os = "linux", target_os = "windows"))]
-fn platform_get_selected_files(patterns: Vec<FilterPattern>, multiple_files: bool, sender: IpcSender<Option<Vec<String>>>) {
+fn platform_get_selected_files(patterns: Vec<FilterPattern>,
+                               multiple_files: bool,
+                               sender: IpcSender<Option<Vec<String>>>) {
     let picker_name = if multiple_files { "Pick files" } else { "Pick a file" };
 
     thread::Builder::new().name(picker_name.to_owned()).spawn(move || {
@@ -368,7 +371,9 @@ fn platform_get_selected_files(patterns: Vec<FilterPattern>, multiple_files: boo
 }
 
 #[cfg(not(any(target_os = "macos", target_os = "linux", target_os = "windows")))]
-fn platform_get_selected_files(_patterns: Vec<FilterPattern>, _multiple_files: bool, sender: IpcSender<Option<Vec<String>>>) {
+fn platform_get_selected_files(_patterns: Vec<FilterPattern>,
+                               _multiple_files: bool,
+                               sender: IpcSender<Option<Vec<String>>>) {
     sender.send(None);
 }