--- /dev/null
+--- a/src/ap/hostapd.c
++++ b/src/ap/hostapd.c
+@@ -72,6 +72,16 @@ static void hostapd_reload_bss(struct ho
+ #endif /* CONFIG_NO_RADIUS */
+
+ ssid = &hapd->conf->ssid;
++
++ hostapd_set_freq(hapd, hapd->iconf->hw_mode, hapd->iface->freq,
++ hapd->iconf->channel,
++ hapd->iconf->ieee80211n,
++ hapd->iconf->ieee80211ac,
++ hapd->iconf->secondary_channel,
++ hapd->iconf->vht_oper_chwidth,
++ hapd->iconf->vht_oper_centr_freq_seg0_idx,
++ hapd->iconf->vht_oper_centr_freq_seg1_idx);
++
+ if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
+ ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
+ /*
+@@ -172,6 +182,9 @@ int hostapd_reload_config(struct hostapd
+ oldconf = hapd->iconf;
+ iface->conf = newconf;
+
++ if (iface->conf->channel)
++ iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel);
++
+ for (j = 0; j < iface->num_bss; j++) {
+ hapd = iface->bss[j];
+ hapd->iconf = newconf;