diff --git a/share/man/man4/ixgbe.4 b/share/man/man4/ixgbe.4
--- a/share/man/man4/ixgbe.4
+++ b/share/man/man4/ixgbe.4
@@ -31,7 +31,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd July 17, 2019
+.Dd May 17, 2023
 .Dt IXGBE 4
 .Os
 .Sh NAME
@@ -68,7 +68,7 @@
 Selecting an MTU larger than 1500 bytes with the
 .Xr ifconfig 8
 utility configures the adapter to receive and transmit Jumbo Frames.
-The maximum MTU size for Jumbo Frames is 16114.
+The maximum MTU size for Jumbo Frames is 9710.
 .Pp
 This driver version supports VLANs.
 For information on enabling VLANs, see