diff --git a/runtime/main/extend/systemplugin/napi/ohos_update.js b/runtime/main/extend/systemplugin/napi/ohos_update.js
index 6a7f1086..1e45391f 100644
--- a/runtime/main/extend/systemplugin/napi/ohos_update.js
+++ b/runtime/main/extend/systemplugin/napi/ohos_update.js
@@ -280,6 +280,7 @@ export function mockUpdate() {
         EventClassifyInfo,
         UpgradeFile,
         DescriptionOptions,
+        DescriptionFormat,
         getOnlineUpdater: function (...args) {
             console.warn("update.getOnlineUpdater interface mocked in the Previewer. How this interface works on the" +
             " Previewer may be different from that on a real device.")