diff --git a/src/platforms/app-plus/service/api/device/system.js b/src/platforms/app-plus/service/api/device/system.js
index 31cf2819bde1248941520b436e3ace5ed83aa979..551c8d4340219c35bfc11a9145c50cf6933c6425 100644
--- a/src/platforms/app-plus/service/api/device/system.js
+++ b/src/platforms/app-plus/service/api/device/system.js
@@ -15,7 +15,7 @@ function weexGetSystemInfoSync () {
 export function getDeviceInfo () {
   weexGetSystemInfoSync()
   const {
-    deviceBrand, deviceModel, osName,
+    deviceBrand = '', deviceModel, osName,
     osVersion, deviceOrientation, deviceType
   } = systemInfo