diff --git a/wpa_supplicant/bss.c b/wpa_supplicant/bss.c
index 6727c86..1051ee3 100644
--- a/wpa_supplicant/bss.c
+++ b/wpa_supplicant/bss.c
@@ -393,8 +393,9 @@
 	dl_list_add_tail(&wpa_s->bss_id, &bss->list_id);
 	wpa_s->num_bss++;
 	wpa_dbg(wpa_s, MSG_DEBUG, "BSS: Add new id %u BSSID " MACSTR
-		" SSID '%s'",
-		bss->id, MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
+		" SSID '%s' freq %d",
+		bss->id, MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len),
+		bss->freq);
 	wpas_notify_bss_added(wpa_s, bss->bssid, bss->id);
 	return bss;
 }
@@ -537,6 +538,9 @@
 	u32 changes;
 
 	changes = wpa_bss_compare_res(bss, res);
+	if (changes & WPA_BSS_FREQ_CHANGED_FLAG)
+		wpa_printf(MSG_DEBUG, "BSS: " MACSTR " changed freq %d --> %d",
+			   MAC2STR(bss->bssid), bss->freq, res->freq);
 	bss->scan_miss_count = 0;
 	bss->last_update_idx = wpa_s->bss_update_idx;
 	wpa_bss_copy_res(bss, res, fetch_time);
diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index 4f082d2..0777a56 100644
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -828,9 +828,9 @@
 	osen = ie != NULL;
 
 	wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
-		"wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
+		"wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d freq=%d %s%s%s",
 		i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
-		wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
+		wpa_ie_len, rsn_ie_len, bss->caps, bss->level, bss->freq,
 		wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 		(wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 		 wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?