diff --git a/app/src/util/needSubscribe.ts b/app/src/util/needSubscribe.ts
index 290481292..e801d0f7a 100644
--- a/app/src/util/needSubscribe.ts
+++ b/app/src/util/needSubscribe.ts
@@ -30,5 +30,5 @@ export const needSubscribe = (tip = window.siyuan.languages._kernel[29]) => {
 };
 
 export const isPaidUser = () => {
-    return 0 === window.siyuan.user.userSiYuanSubscriptionStatus || 1 === window.siyuan.user.userSiYuanOneTimePayStatus;
+    return window.siyuan.user && (0 === window.siyuan.user.userSiYuanSubscriptionStatus || 1 === window.siyuan.user.userSiYuanOneTimePayStatus);
 }