diff --git a/sys/dev/qlxgb/qla_os.c b/sys/dev/qlxgb/qla_os.c
index 0b5daa98891..d56731115a9 100644
--- a/sys/dev/qlxgb/qla_os.c
+++ b/sys/dev/qlxgb/qla_os.c
@@ -671,6 +671,7 @@ qla_init_ifnet(device_t dev, qla_host_t *ha)
 
 	if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 
+	ifp->if_mtu = ETHERMTU;
 	ifp->if_baudrate = IF_Gbps(10);
 	ifp->if_init = qla_init;
 	ifp->if_softc = ha;