diff --git a/src/ap/acs.c b/src/ap/acs.c
index 7708bc2..57fc6da 100644
--- a/src/ap/acs.c
+++ b/src/ap/acs.c
@@ -994,6 +994,14 @@
 	if (iface->conf->ieee80211ac || iface->conf->ieee80211ax)
 		acs_adjust_center_freq(iface);
 
+	err = hostapd_select_hw_mode(iface);
+	if (err) {
+		wpa_printf(MSG_ERROR, "ACS: Could not (err: %d) select hw_mode for freq=%d channel=%d",
+			err, iface->freq, iface->conf->channel);
+		err = -1;
+		goto fail;
+	}
+
 	err = 0;
 fail:
 	/*