diff --git a/lib/cc2650.js b/lib/cc2650.js
index 59b5b9f..8db7db7 100644
--- a/lib/cc2650.js
+++ b/lib/cc2650.js
@@ -40,7 +40,7 @@ var CC2650SensorTag = function(peripheral) {
 
 CC2650SensorTag.is = function(peripheral) {
   var localName = peripheral.advertisement.localName;
-  var serviceUuids = peripheral.advertisement.serviceUuids;
+  var serviceUuids = peripheral.advertisement.serviceUuids || [];
 
   return (localName === 'CC2650 SensorTag') || (localName === 'SensorTag 2.0') || (serviceUuids.indexOf('aa80') > -1 );
 };