diff --git a/tests/run-pass/time.rs b/tests/run-pass/time.rs
index e76c8573c51..cce29003e56 100644
--- a/tests/run-pass/time.rs
+++ b/tests/run-pass/time.rs
@@ -8,7 +8,7 @@ fn duration_sanity(diff: Duration) {
     assert!(diff.as_millis() < 500);
 }
 
-// Thus far, only `libc::nanosleep`, is implemented, not `c::Sleep`.
+// Sleeping on Windows is not supported yet.
 #[cfg(unix)]
 fn test_sleep() {
     let before = Instant::now();