diff --git a/src/lib.rs b/src/lib.rs
index 705048a..8d14cec 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -71,6 +71,7 @@ extern crate owning_ref;
 extern crate chan;
 
 
+#[allow(unused)]
 macro_rules! println_stderr(
     ($($arg:tt)*) => { {
         use ::std::io::Write;