diff --git a/src/rn-dy-glucose-driver.js b/src/rn-dy-glucose-driver.js
index bbbdf90..fe3b7e1 100755
--- a/src/rn-dy-glucose-driver.js
+++ b/src/rn-dy-glucose-driver.js
@@ -731,7 +731,7 @@ export default class RNDYGlucoseDriver {
                 return;
             }
             const deviceList = deviceInfos.filter((device) => {
-                return device.deviceName.indexOf('TH-') >= 0
+                return device?.deviceName?.indexOf('TH-') >= 0
             });
 
             this._onUpdateDeviceList(deviceList);