diff --git a/lib/nbsd_libc/include/namespace.h b/lib/nbsd_libc/include/namespace.h
index 6932c0825..4a688aa52 100644
--- a/lib/nbsd_libc/include/namespace.h
+++ b/lib/nbsd_libc/include/namespace.h
@@ -906,6 +906,7 @@
 #define shmat _shmat
 #define shmdt _shmdt
 #define shmget _shmget
+#define shutdown _shutdown
 #define sigreturn	_sigreturn
 #define socket _socket
 #define socketpair _socketpair