diff --git a/tools/virtiofsd/helper.c b/tools/virtiofsd/helper.c
index 28243b51b2..5e98ed702b 100644
--- a/tools/virtiofsd/helper.c
+++ b/tools/virtiofsd/helper.c
@@ -172,6 +172,9 @@ void fuse_cmdline_help(void)
            "                               default: no_writeback\n"
            "    -o xattr|no_xattr          enable/disable xattr\n"
            "                               default: no_xattr\n"
+           "    -o xattrmap=<mapping>      Enable xattr mapping (enables xattr)\n"
+           "                               <mapping> is a string consists of a series of rules\n"
+           "                               e.g. -o xattrmap=:map::user.virtiofs.:\n"
            "    -o modcaps=CAPLIST         Modify the list of capabilities\n"
            "                               e.g. -o modcaps=+sys_admin:-chown\n"
            "    --rlimit-nofile=<num>      set maximum number of file descriptors\n"