diff --git a/usr.bin/ldd/ldd.c b/usr.bin/ldd/ldd.c
index c8e0be3d4552..cc3a7692b97e 100644
--- a/usr.bin/ldd/ldd.c
+++ b/usr.bin/ldd/ldd.c
@@ -48,8 +48,8 @@ __FBSDID("$FreeBSD$");
 
 #include "extern.h"
 
-/* We don't support a.out executables on arm64 */
-#ifndef __aarch64__
+/* We don't support a.out executables on arm64 and riscv */
+#if !defined(__aarch64__) && !defined(__riscv__)
 #include <a.out.h>
 #define	AOUT_SUPPORTED
 #endif