diff --git a/package/mtk/applications/luci-app-mtwifi-cfg/root/usr/share/luci-app-mtwifi-cfg/wireless-mtk.js b/package/mtk/applications/luci-app-mtwifi-cfg/root/usr/share/luci-app-mtwifi-cfg/wireless-mtk.js
index 494a61c592..55bc25a2bc 100644
--- a/package/mtk/applications/luci-app-mtwifi-cfg/root/usr/share/luci-app-mtwifi-cfg/wireless-mtk.js
+++ b/package/mtk/applications/luci-app-mtwifi-cfg/root/usr/share/luci-app-mtwifi-cfg/wireless-mtk.js
@@ -579,14 +579,11 @@ var CBIWifiFrequencyValue = form.Value.extend({
 	},
 
 	write: function(section_id, value) {
-		uci.set('wireless', section_id, 'htmode', value[0] || null);
-
-		if (this.useBandOption)
-			uci.set('wireless', section_id, 'band', value[1]);
-		else
-			uci.set('wireless', section_id, 'hwmode', (value[1] == '2g') ? '11g' : '11a');
-
-		uci.set('wireless', section_id, 'channel', value[2]);
+		if (value[0] && value[1] && value[2])
+		{
+			uci.set('wireless', section_id, 'htmode', value[0]);
+			uci.set('wireless', section_id, 'channel', value[2]);
+		}
 	}
 });