diff --git a/uni_modules/uni-installApk/utssdk/unierror.uts b/uni_modules/uni-installApk/utssdk/unierror.uts
index a10c730d262388e3a2f945208c69f2cc66bee40c..8b849401edbdd8c58adc547ce737f5b367463b4d 100644
--- a/uni_modules/uni-installApk/utssdk/unierror.uts
+++ b/uni_modules/uni-installApk/utssdk/unierror.uts
@@ -15,7 +15,8 @@ export const UniErrors : Map<InstallApkErrorCode, string> = new Map([
 	[1300002, 'No such file'],
 ]);
 
-export class InstallApkFailImpl extends UniError implements InstallApkFail {
+export class InstallApkFailImpl extends UniError implements InstallApkFail {
+  override errCode : InstallApkErrorCode
 	constructor(errCode : InstallApkErrorCode) {
 		super();
 		this.errSubject = UniErrorSubject;