diff --git a/sbin/mount_cd9660/mount_cd9660.8 b/sbin/mount_cd9660/mount_cd9660.8
index 2e0e661f98b6..d3dfdb47d946 100644
--- a/sbin/mount_cd9660/mount_cd9660.8
+++ b/sbin/mount_cd9660/mount_cd9660.8
@@ -44,7 +44,7 @@
 .Nm mount_cd9660
 .Op Fl egrv
 .Op Fl o Ar options
-.Op Fl s startsector
+.Op Fl s Ar startsector
 .Ar special | node
 .Sh DESCRIPTION
 The