diff --git a/man/iodine.8 b/man/iodine.8
index 9eb88f0..1eeac2b 100644
--- a/man/iodine.8
+++ b/man/iodine.8
@@ -17,6 +17,8 @@ iodine, iodined \- tunnel IPv4 over DNS
 .I chrootdir
 .B ] [-d
 .I device
+.B ] [-m
+.I fragsize
 .B ]
 .B [
 .I nameserver