diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index 9d808c55d..f034e5040 100644
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -1921,7 +1921,7 @@ static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 	if (wnm_scan_process(wpa_s, 1) > 0)
 		goto scan_work_done;
 
-	if (sme_proc_obss_scan(wpa_s) > 0)
+	if (sme_proc_obss_scan(wpa_s, scan_res) > 0)
 		goto scan_work_done;
 
 	if (own_request && data &&
diff --git a/wpa_supplicant/sme.c b/wpa_supplicant/sme.c
index 749802496..08d7e3ece 100644
--- a/wpa_supplicant/sme.c
+++ b/wpa_supplicant/sme.c
@@ -13,6 +13,7 @@
 #include "common/ieee802_11_defs.h"
 #include "common/ieee802_11_common.h"
 #include "common/ocv.h"
+#include "common/hw_features_common.h"
 #include "eapol_supp/eapol_supp_sm.h"
 #include "common/wpa_common.h"
 #include "common/sae.h"
@@ -2214,13 +2215,14 @@ static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
 }
 
 
-int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
+int sme_proc_obss_scan(struct wpa_supplicant *wpa_s,
+		       struct wpa_scan_results *scan_res)
 {
-	struct wpa_bss *bss;
 	const u8 *ie;
-	u16 ht_cap;
 	u8 chan_list[P2P_MAX_CHANNELS], channel;
 	u8 num_channels = 0, num_intol = 0, i;
+	size_t j;
+	int pri_freq, sec_freq;
 
 	if (!wpa_s->sme.sched_obss_scan)
 		return 0;
@@ -2248,22 +2250,36 @@ int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
 
 	os_memset(chan_list, 0, sizeof(chan_list));
 
-	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
-		/* Skip other band bss */
+	pri_freq = wpa_s->assoc_freq;
+
+	switch (wpa_s->sme.ht_sec_chan) {
+	case HT_SEC_CHAN_ABOVE:
+		sec_freq = pri_freq + 20;
+		break;
+	case HT_SEC_CHAN_BELOW:
+		sec_freq = pri_freq - 20;
+		break;
+	case HT_SEC_CHAN_UNKNOWN:
+	default:
+		wpa_msg(wpa_s, MSG_WARNING,
+			"Undefined secondary channel: drop OBSS scan results");
+		return 1;
+	}
+
+	for (j = 0; j < scan_res->num; j++) {
+		struct wpa_scan_res *bss = scan_res->res[j];
 		enum hostapd_hw_mode mode;
+		int res;
+
+		/* Skip other band bss */
 		mode = ieee80211_freq_to_chan(bss->freq, &channel);
 		if (mode != HOSTAPD_MODE_IEEE80211G &&
 		    mode != HOSTAPD_MODE_IEEE80211B)
 			continue;
 
-		ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
-		ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
-		wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
-			   " freq=%u chan=%u ht_cap=0x%x",
-			   MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
-
-		if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
-			if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
+		res = check_bss_coex_40mhz(bss, pri_freq, sec_freq);
+		if (res) {
+			if (res == 2)
 				num_intol++;
 
 			/* Check whether the channel is already considered */
diff --git a/wpa_supplicant/sme.h b/wpa_supplicant/sme.h
index 1a7f9e832..42d5a8317 100644
--- a/wpa_supplicant/sme.h
+++ b/wpa_supplicant/sme.h
@@ -37,7 +37,8 @@ void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
 void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s);
 void sme_deinit(struct wpa_supplicant *wpa_s);
 
-int sme_proc_obss_scan(struct wpa_supplicant *wpa_s);
+int sme_proc_obss_scan(struct wpa_supplicant *wpa_s,
+		       struct wpa_scan_results *scan_res);
 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable);
 void sme_external_auth_trigger(struct wpa_supplicant *wpa_s,
 			       union wpa_event_data *data);
@@ -112,7 +113,8 @@ static inline void sme_deinit(struct wpa_supplicant *wpa_s)
 {
 }
 
-static inline int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
+static inline int sme_proc_obss_scan(struct wpa_supplicant *wpa_s,
+				     struct wpa_scan_results *scan_res)
 {
 	return 0;
 }