diff --git a/lib/wifi.js b/lib/wifi.js
index 1adf4dc..dea6d38 100644
--- a/lib/wifi.js
+++ b/lib/wifi.js
@@ -417,12 +417,12 @@ function parseWifiDarwin(wifiStr) {
       } else if (sm.startsWith('pairport_security_mode_wpa3')) {
         security.push('WPA3');
       }
-      const channel = parseInt((wifiItem.spairport_network_channel).split(' ')[0]) || 0;
+      const channel = parseInt(('' + wifiItem.spairport_network_channel).split(' ')[0]) || 0;
       const signalLevel = wifiItem.spairport_signal_noise || null;
 
       result.push({
         ssid: wifiItem._name || '',
-        bssid: wifiItem.spairport_network_bssid || '',
+        bssid: wifiItem.spairport_network_bssid || null,
         mode: wifiItem.spairport_network_phymode,
         channel,
         frequency: wifiFrequencyFromChannel(channel),