diff --git a/sys/dev/usb/wlan/if_run.c b/sys/dev/usb/wlan/if_run.c
index 4cf99963bcd2..0c1080b48249 100644
--- a/sys/dev/usb/wlan/if_run.c
+++ b/sys/dev/usb/wlan/if_run.c
@@ -4530,7 +4530,7 @@ run_rt5390_bbp_init(struct run_softc *sc)
 
 	/* Avoid data lost and CRC error. */
 	run_bbp_read(sc, 4, &bbp4);
-	run_bbp_write(sc, 4, bbp4 | 0x40);
+	run_bbp_write(sc, 4, bbp | RT5390_MAC_IF_CTRL);
 
 	for (i = 0; i < nitems(rt5390_def_bbp); i++) {
 		run_bbp_write(sc, rt5390_def_bbp[i].reg,
@@ -4746,11 +4746,11 @@ run_rt5390_rf_init(struct run_softc *sc)
 	/* Toggle RF R2 to initiate calibration. */
 	if (sc->mac_ver == 0x5390) {
 		run_rt3070_rf_read(sc, 2, &rf);
-		run_rt3070_rf_write(sc, 2, rf | 0x80);
+		run_rt3070_rf_write(sc, 2, rf | RT5390_RESCAL);
 		run_delay(sc, 10);
-		run_rt3070_rf_write(sc, 2, rf & ~0x80);
+		run_rt3070_rf_write(sc, 2, rf & ~RT5390_RESCAL);
 	} else {
-		run_rt3070_rf_write(sc, 2, 0x80);
+		run_rt3070_rf_write(sc, 2, RT5390_RESCAL);
 		run_delay(sc, 10);
 	}
 
@@ -4889,7 +4889,7 @@ run_rt3070_rf_setup(struct run_softc *sc)
 
 		/* Avoid data lost and CRC error. */
 		run_bbp_read(sc, 4, &bbp);
-		run_bbp_write(sc, 4, bbp | 0x40);
+		run_bbp_write(sc, 4, bbp | RT5390_MAC_IF_CTRL);
 
 		run_rt3070_rf_read(sc, 30, &rf);
 		rf = (rf & ~0x18) | 0x10;
diff --git a/sys/dev/usb/wlan/if_runreg.h b/sys/dev/usb/wlan/if_runreg.h
index 8a0e4d90cbe6..fe7c60347530 100644
--- a/sys/dev/usb/wlan/if_runreg.h
+++ b/sys/dev/usb/wlan/if_runreg.h
@@ -707,6 +707,9 @@
 /* possible flags for RT3020 RF register 21 */
 #define RT3070_RX_LO2	(1 << 3)
 
+/* Possible flags for RT5390 RF register 2. */
+#define	RT5390_RESCAL	(1 << 7)
+
 /* Possible flags for RT5390 RF register 3. */
 #define	RT5390_VCOCAL	(1 << 7)
 
@@ -716,6 +719,13 @@
 /* Possible flags for RT5390 RF register 39. */
 #define	RT5390_RX_LO2	(1 << 7)
 
+/* Possible flags for RT5390 BBP register 4. */
+#define	RT5390_MAC_IF_CTRL	(1 << 6)
+
+/* Possible flags for RT5390 BBP register 105. */
+#define	RT5390_MLD			(1 << 2)
+#define	RT5390_EN_SIG_MODULATION	(1 << 3)
+
 /* RT2860 TX descriptor */
 struct rt2860_txd {
 	uint32_t	sdp0;		/* Segment Data Pointer 0 */