diff --git a/sys/dev/rtwn/if_rtwn_tx.c b/sys/dev/rtwn/if_rtwn_tx.c
--- a/sys/dev/rtwn/if_rtwn_tx.c
+++ b/sys/dev/rtwn/if_rtwn_tx.c
@@ -117,6 +117,7 @@
 	struct rtwn_tx_desc_common *txd;
 	struct rtwn_tx_buf buf;
 	uint8_t rate, ridx, type;
+	bool force_rate = false;
 	u_int cipher;
 	int ismcast;
 
@@ -129,13 +130,16 @@
 	/* Choose a TX rate index. */
 	if (type == IEEE80211_FC0_TYPE_MGT ||
 	    type == IEEE80211_FC0_TYPE_CTL ||
-	    (m->m_flags & M_EAPOL) != 0)
+	    (m->m_flags & M_EAPOL) != 0) {
 		rate = tp->mgmtrate;
-	else if (ismcast)
+		force_rate = true;
+	} else if (ismcast) {
+		force_rate = true;
 		rate = tp->mcastrate;
-	else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
+	} else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
+		force_rate = true;
 		rate = tp->ucastrate;
-	else {
+	} else {
 		if (sc->sc_ratectl == RTWN_RATECTL_NET80211) {
 			/* XXX pass pktlen */
 			(void) ieee80211_ratectl_rate(ni, NULL, 0);
@@ -172,7 +176,7 @@
 	memset(txd, 0, sc->txdesc_len);
 	txd->txdw1 = htole32(SM(RTWN_TXDW1_CIPHER, rtwn_get_cipher(cipher)));
 
-	rtwn_fill_tx_desc(sc, ni, m, txd, ridx, tp->maxretry);
+	rtwn_fill_tx_desc(sc, ni, m, txd, ridx, force_rate, tp->maxretry);
 
 	if (ieee80211_radiotap_active_vap(vap)) {
 		struct rtwn_tx_radiotap_header *tap = &sc->sc_txtap;
diff --git a/sys/dev/rtwn/if_rtwnvar.h b/sys/dev/rtwn/if_rtwnvar.h
--- a/sys/dev/rtwn/if_rtwnvar.h
+++ b/sys/dev/rtwn/if_rtwnvar.h
@@ -319,7 +319,7 @@
 	void		(*sc_detach_private)(struct rtwn_softc *);
 	void		(*sc_fill_tx_desc)(struct rtwn_softc *,
 			    struct ieee80211_node *, struct mbuf *,
-			    void *, uint8_t, int);
+			    void *, uint8_t, bool, int);
 	void		(*sc_fill_tx_desc_raw)(struct rtwn_softc *,
 			    struct ieee80211_node *, struct mbuf *,
 			    void *, const struct ieee80211_bpf_params *);
@@ -527,9 +527,9 @@
 #define rtwn_detach_private(_sc) \
 	(((_sc)->sc_detach_private)((_sc)))
 #define rtwn_fill_tx_desc(_sc, _ni, _m, \
-	    _buf, _ridx, _maxretry) \
+	    _buf, _ridx, _force, _maxretry) \
 	(((_sc)->sc_fill_tx_desc)((_sc), (_ni), \
-	    (_m), (_buf), (_ridx), (_maxretry)))
+	    (_m), (_buf), (_ridx), (_force), (_maxretry)))
 #define rtwn_fill_tx_desc_raw(_sc, _ni, _m, \
 	    _buf, _params) \
 	(((_sc)->sc_fill_tx_desc_raw)((_sc), (_ni), \
diff --git a/sys/dev/rtwn/rtl8192c/r92c.h b/sys/dev/rtwn/rtl8192c/r92c.h
--- a/sys/dev/rtwn/rtl8192c/r92c.h
+++ b/sys/dev/rtwn/rtl8192c/r92c.h
@@ -117,7 +117,7 @@
 void	r92c_tx_setup_hwseq(void *);
 void	r92c_tx_setup_macid(void *, int);
 void	r92c_fill_tx_desc(struct rtwn_softc *, struct ieee80211_node *,
-	    struct mbuf *, void *, uint8_t, int);
+	    struct mbuf *, void *, uint8_t, bool, int);
 void	r92c_fill_tx_desc_raw(struct rtwn_softc *, struct ieee80211_node *,
 	    struct mbuf *, void *, const struct ieee80211_bpf_params *);
 void	r92c_fill_tx_desc_null(struct rtwn_softc *, void *, int, int, int);
diff --git a/sys/dev/rtwn/rtl8192c/r92c_tx.c b/sys/dev/rtwn/rtl8192c/r92c_tx.c
--- a/sys/dev/rtwn/rtl8192c/r92c_tx.c
+++ b/sys/dev/rtwn/rtl8192c/r92c_tx.c
@@ -259,7 +259,7 @@
 
 void
 r92c_fill_tx_desc(struct rtwn_softc *sc, struct ieee80211_node *ni,
-    struct mbuf *m, void *buf, uint8_t ridx, int maxretry)
+    struct mbuf *m, void *buf, uint8_t ridx, bool force_rate, int maxretry)
 {
 #ifndef RTWN_WITHOUT_UCODE
 	struct r92c_softc *rs = sc->sc_priv;
diff --git a/sys/dev/rtwn/rtl8812a/r12a.h b/sys/dev/rtwn/rtl8812a/r12a.h
--- a/sys/dev/rtwn/rtl8812a/r12a.h
+++ b/sys/dev/rtwn/rtl8812a/r12a.h
@@ -131,7 +131,7 @@
 
 /* r12a_tx.c */
 void	r12a_fill_tx_desc(struct rtwn_softc *, struct ieee80211_node *,
-	    struct mbuf *, void *, uint8_t, int);
+	    struct mbuf *, void *, uint8_t, bool, int);
 void	r12a_fill_tx_desc_raw(struct rtwn_softc *, struct ieee80211_node *,
 	    struct mbuf *, void *, const struct ieee80211_bpf_params *);
 void	r12a_fill_tx_desc_null(struct rtwn_softc *, void *, int, int, int);
diff --git a/sys/dev/rtwn/rtl8812a/r12a_tx.c b/sys/dev/rtwn/rtl8812a/r12a_tx.c
--- a/sys/dev/rtwn/rtl8812a/r12a_tx.c
+++ b/sys/dev/rtwn/rtl8812a/r12a_tx.c
@@ -261,7 +261,7 @@
 
 void
 r12a_fill_tx_desc(struct rtwn_softc *sc, struct ieee80211_node *ni,
-    struct mbuf *m, void *buf, uint8_t ridx, int maxretry)
+    struct mbuf *m, void *buf, uint8_t ridx, bool force_rate, int maxretry)
 {
 	struct ieee80211com *ic = &sc->sc_ic;
 	struct ieee80211vap *vap = ni->ni_vap;