diff --git a/ts/smartnetwork.classes.smartnetwork.ts b/ts/smartnetwork.classes.smartnetwork.ts
index 36b8ed1..4d96f98 100644
--- a/ts/smartnetwork.classes.smartnetwork.ts
+++ b/ts/smartnetwork.classes.smartnetwork.ts
@@ -136,6 +136,10 @@ export class SmartNetwork {
 
   public async getDefaultGateway(): Promise<{ipv4: plugins.os.NetworkInterfaceInfo, ipv6: plugins.os.NetworkInterfaceInfo}> {
     const defaultGatewayName = await plugins.systeminformation.networkInterfaceDefault();
+    if (!defaultGatewayName) {
+      console.log('Cannot determine default gateway');
+      return null;
+    }
     const gateways = await this.getGateways();
     const defaultGateway = gateways[defaultGatewayName];
     return {