diff --git a/src/xz/message.c b/src/xz/message.c
index e3ac6ff6..b94a0eba 100644
--- a/src/xz/message.c
+++ b/src/xz/message.c
@@ -1107,6 +1107,7 @@ message_help(bool long_help)
 "  --powerpc[=OPTS]    PowerPC BCJ filter (big endian only)\n"
 "  --ia64[=OPTS]       IA-64 (Itanium) BCJ filter\n"
 "  --sparc[=OPTS]      SPARC BCJ filter\n"
+"  --riscv[=OPTS]      RISC-V BCJ filter\n"
 "                      Valid OPTS for all BCJ filters:\n"
 "                        start=NUM  start offset for conversions (default=0)"));