--- a/hostapd/config_file.c
+++ b/hostapd/config_file.c
@@ -2485,6 +2485,8 @@ static int hostapd_config_fill(struct ho
 			}
 #endif /* CONFIG_IEEE80211W */
 #ifdef CONFIG_IEEE80211N
+		} else if (os_strcmp(buf, "noscan") == 0) {
+			conf->noscan = atoi(pos);
 		} else if (os_strcmp(buf, "ieee80211n") == 0) {
 			conf->ieee80211n = atoi(pos);
 		} else if (os_strcmp(buf, "ht_capab") == 0) {
--- a/src/ap/ap_config.h
+++ b/src/ap/ap_config.h
@@ -497,6 +497,7 @@ struct hostapd_config {
 
 	int ht_op_mode_fixed;
 	u16 ht_capab;
+	int noscan;
 	int ieee80211n;
 	int secondary_channel;
 	int require_ht;
--- a/src/ap/hw_features.c
+++ b/src/ap/hw_features.c
@@ -493,7 +493,7 @@ static int ieee80211n_check_40mhz(struct
 {
 	struct wpa_driver_scan_params params;
 
-	if (!iface->conf->secondary_channel)
+	if (!iface->conf->secondary_channel || iface->conf->noscan)
 		return 0; /* HT40 not used */
 
 	wpa_printf(MSG_DEBUG, "Scan for neighboring BSSes prior to enabling "
