diff --git a/lib/libc/gen/nlist_private.h b/lib/libc/gen/nlist_private.h
index d9de46b20004..6516524801b3 100644
--- a/lib/libc/gen/nlist_private.h
+++ b/lib/libc/gen/nlist_private.h
@@ -1,4 +1,4 @@
-/* $NetBSD: nlist_private.h,v 1.22 2012/03/20 16:36:05 matt Exp $ */
+/* $NetBSD: nlist_private.h,v 1.23 2015/06/13 17:28:42 dennis Exp $ */
 
 /*
  * Copyright (c) 1996 Christopher G. Demetriou
@@ -62,6 +62,13 @@
 #  define	NLIST_ELF32
 #elif defined(__hppa__)
 #  define	NLIST_ELF32
+#elif defined(__riscv__)
+#  define	NLIST_ELF32
+#  ifdef __riscv64
+#    define	NLIST_ELF64
+#  endif
+#elif defined(__aarch64__)
+#  define	NLIST_ELF64
 #else
 #  define	NLIST_AOUT
 /* #define	NLIST_ECOFF */