diff --git a/sbin/ifconfig/ifconfig.8 b/sbin/ifconfig/ifconfig.8
--- a/sbin/ifconfig/ifconfig.8
+++ b/sbin/ifconfig/ifconfig.8
@@ -587,10 +587,10 @@
 not on a
 .Xr vlan 4
 interface itself.
-.It Fl vlanmtu , vlanhwtag , vlanhwfilter , vlanhwtso
+.It Fl vlanmtu , vlanhwtag , vlanhwfilter , vlanhwcsum , vlanhwtso
 If the driver offers user-configurable VLAN support, disable
 reception of extended frames, tag processing in hardware,
-frame filtering in hardware, or TSO on VLAN,
+frame filtering in hardware, checksum offloading, or TSO on VLAN,
 respectively.
 .It Cm vxlanhwcsum , vxlanhwtso
 If the driver offers user-configurable VXLAN support, enable inner checksum