diff --git a/src/lib.rs b/src/lib.rs
index b10e8e1..053f1c1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -123,4 +123,4 @@ impl<T> SyncWrapper<T> {
 
 // this is safe because the only operations permitted on this data structure require exclusive
 // access or ownership
-unsafe impl<T: Send> Sync for SyncWrapper<T> {}
+unsafe impl<T> Sync for SyncWrapper<T> {}