diff --git a/src/platforms/app-plus/service/api/ad/rewarded-video-ad.js b/src/platforms/app-plus/service/api/ad/rewarded-video-ad.js
index f463d15461abe6430456fb7505fa904280b6006c..32452fb09a403fd3faea21a4988d517c1963b5b2 100644
--- a/src/platforms/app-plus/service/api/ad/rewarded-video-ad.js
+++ b/src/platforms/app-plus/service/api/ad/rewarded-video-ad.js
@@ -36,7 +36,7 @@ class RewardedVideoAd {
       this._loadAd()
       this._dispatchEvent('close', { isEnded: e.isEnded })
     })
-    rewardAd.onVerify((e) => {
+    rewardAd.onVerify && rewardAd.onVerify((e) => {
       this._dispatchEvent('verify', { isValid: e.isValid })
     })
     rewardAd.onError((e) => {