diff --git a/sys/dev/usb/net/if_axe.c b/sys/dev/usb/net/if_axe.c
index f0d1044ee48c..d6da7c5ff54d 100644
--- a/sys/dev/usb/net/if_axe.c
+++ b/sys/dev/usb/net/if_axe.c
@@ -833,19 +833,15 @@ axe_attach_post(struct usb_ether *ue)
 	/* Initialize controller and get station address. */
 	if (sc->sc_flags & AXE_FLAG_178) {
 		axe_ax88178_init(sc);
-		sc->sc_tx_bufsz = 16 * 1024;
 		axe_cmd(sc, AXE_178_CMD_READ_NODEID, 0, 0, ue->ue_eaddr);
 	} else if (sc->sc_flags & AXE_FLAG_772) {
 		axe_ax88772_init(sc);
-		sc->sc_tx_bufsz = 8 * 1024;
 		axe_cmd(sc, AXE_178_CMD_READ_NODEID, 0, 0, ue->ue_eaddr);
 	} else if (sc->sc_flags & AXE_FLAG_772A) {
 		axe_ax88772a_init(sc);
-		sc->sc_tx_bufsz = 8 * 1024;
 		axe_cmd(sc, AXE_178_CMD_READ_NODEID, 0, 0, ue->ue_eaddr);
 	} else if (sc->sc_flags & AXE_FLAG_772B) {
 		axe_ax88772b_init(sc);
-		sc->sc_tx_bufsz = 8 * 1024;
 	} else
 		axe_cmd(sc, AXE_172_CMD_READ_NODEID, 0, 0, ue->ue_eaddr);
 
diff --git a/sys/dev/usb/net/if_axereg.h b/sys/dev/usb/net/if_axereg.h
index ab2b28d24fe9..64cb2352485a 100644
--- a/sys/dev/usb/net/if_axereg.h
+++ b/sys/dev/usb/net/if_axereg.h
@@ -349,7 +349,6 @@ struct axe_softc {
 	uint8_t			sc_phyaddrs[2];
 	uint16_t		sc_pwrcfg;
 	uint16_t		sc_lenmask;
-	int			sc_tx_bufsz;
 };
 
 #define	AXE_IS_178_FAMILY(sc)						  \