diff --git a/app/src/protyle/util/compatibility.ts b/app/src/protyle/util/compatibility.ts
index a4f30a4cdcf..9223a1d2451 100644
--- a/app/src/protyle/util/compatibility.ts
+++ b/app/src/protyle/util/compatibility.ts
@@ -111,7 +111,7 @@ export const isHuawei = () => {
 };
 
 export const isDisabledFeature = (feature: string): boolean => {
-    return window.siyuan.config.system.disabledFeatures.indexOf(feature) > -1;
+    return window.siyuan.config.system.disabledFeatures?.indexOf(feature) > -1;
 };
 
 export const isIPhone = () => {