diff --git a/kernel/futex.c b/kernel/futex.c
index d701be5..e2b0fb9 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -2449,6 +2449,8 @@
 	if (!futex_cmpxchg_enabled)
 		return -ENOSYS;
 
+	WARN_ONCE(1, "deprecated: get_robust_list will be deleted in 2013.\n");
+
 	rcu_read_lock();
 
 	ret = -ESRCH;