diff --git a/sys/sys/rwlock.h b/sys/sys/rwlock.h
index 0cf1919101b..2b4d82f263f 100644
--- a/sys/sys/rwlock.h
+++ b/sys/sys/rwlock.h
@@ -149,8 +149,6 @@ void	_rw_assert(struct rwlock *rw, int what, const char *file, int line);
 
 /*
  * Public interface for lock operations.
- *
- * XXX: Missing try locks.
  */
 
 #ifndef LOCK_DEBUG