diff --git a/code/HelloWorld/entry/src/main/ets/models/MyCallback.ets b/code/HelloWorld/entry/src/main/ets/models/MyCallback.ets
index 5827b846dc824ef26c25e0a8612717cb7b448a3a..5bdf82c967083ebd6f8fa4d33c5f1710ff4a5e12 100644
--- a/code/HelloWorld/entry/src/main/ets/models/MyCallback.ets
+++ b/code/HelloWorld/entry/src/main/ets/models/MyCallback.ets
@@ -28,8 +28,10 @@ export class MyCallback {
     MyCallback.myCallback((data: string) => {
       hilog.info(0x0000, 'testTag', 'MyCallback' + data);
     })
-    MyCallback.myAsyncCallback((error: BusinessError<string>, result: string) => {
-      hilog.info(0x0000, 'testTag', `myAsyncCallback, error: ${error.message}, result:${result}`);
+    MyCallback.myAsyncCallback((error: BusinessError<string> | null, result: string | undefined) => {
+      if (error && result) {
+        hilog.info(0x0000, 'testTag', `myAsyncCallback, error: ${error.message}, result:${result}`);
+      }
     })
     MyCallback.myErrorCallback((error: BusinessError<string>) => {
       hilog.info(0x0000, 'testTag', `myAsyncCallback, error: ${error.message}`);