2 files changed, 8 insertions, 0 deletions
diff --git a/src/osx/headless.rs b/src/osx/headless.rs
index bbe3d9f..1332cf3 100644
--- a/src/osx/headless.rs
+++ b/src/osx/headless.rs
@@ -99,6 +99,9 @@ impl HeadlessContext {
     }
 }
 
+unsafe impl Send for HeadlessContext {}
+unsafe impl Sync for HeadlessContext {}
+
 impl Drop for HeadlessContext {
     fn drop(&mut self) {
         unsafe {
diff --git a/src/osx/mod.rs b/src/osx/mod.rs
index 7df6603..92ef641 100644
--- a/src/osx/mod.rs
+++ b/src/osx/mod.rs
@@ -73,6 +73,11 @@ impl Window {
 }
 
 #[cfg(feature = "window")]
+unsafe impl Send for Window {}
+#[cfg(feature = "window")]
+unsafe impl Sync for Window {}
+
+#[cfg(feature = "window")]
 #[deriving(Clone)]
 pub struct WindowProxy;