diff --git a/sys/dev/usb/wlan/if_rsu.c b/sys/dev/usb/wlan/if_rsu.c
index c967435250ee..cb07fadd2ffa 100644
--- a/sys/dev/usb/wlan/if_rsu.c
+++ b/sys/dev/usb/wlan/if_rsu.c
@@ -3480,7 +3480,7 @@ rsu_load_firmware(struct rsu_softc *sc)
 	dmem.vcs_mode = R92S_VCS_MODE_RTS_CTS;
 	dmem.turbo_mode = 0;
 	dmem.bw40_en = !! (ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40);
-	dmem.amsdu2ampdu_en = !! (sc->sc_ht);
+	dmem.amsdu2ampdu_en = 0;
 	dmem.ampdu_en = !! (sc->sc_ht);
 	dmem.agg_offload = !! (sc->sc_ht);
 	dmem.qos_en = 1;