diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index 3f63420f4..72cdfa69a 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "4.2.6",
+    "version": "4.2.7",
     "bin": "bin/hydrooj.js",
     "main": "src/plugin-api",
     "module": "src/plugin-api",
diff --git a/packages/hydrooj/src/handler/manage.ts b/packages/hydrooj/src/handler/manage.ts
index 931e9efff..961214500 100644
--- a/packages/hydrooj/src/handler/manage.ts
+++ b/packages/hydrooj/src/handler/manage.ts
@@ -171,7 +171,7 @@ class SystemSettingHandler extends SystemHandler {
         for (const key in booleanKeys) {
             if (typeof booleanKeys[key] === 'object') {
                 for (const subkey in booleanKeys[key]) {
-                    if (!args[key][subkey]) tasks.push(system.set(`${key}.${subkey}`, false));
+                    if (!args[key]?.[subkey]) tasks.push(system.set(`${key}.${subkey}`, false));
                 }
             }
         }