diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index e36564406..2397a34b1 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.20.11",
+    "version": "2.20.12",
     "bin": "bin/hydrooj.js",
     "main": "dist/loader.js",
     "typings": "dist/loader.d.ts",
diff --git a/packages/hydrooj/src/error.ts b/packages/hydrooj/src/error.ts
index 8000f3f50..975d43a1a 100644
--- a/packages/hydrooj/src/error.ts
+++ b/packages/hydrooj/src/error.ts
@@ -1,7 +1,6 @@
 /* eslint-disable max-len */
 /* eslint-disable func-names */
 import { isClass } from './utils';
-import { PERMS } from './model/builtin';
 
 interface IHydroError {
     new(...args: any[]): HydroError
@@ -78,7 +77,7 @@ export const VerifyPasswordError = Err('VerifyPasswordError', ForbiddenError, "P
 export const OpcountExceededError = Err('OpcountExceededError', ForbiddenError, 'Too frequent operations of {0} (limit: {2} operations in {1} seconds).');
 export const PermissionError = Err('PermissionError', ForbiddenError, function () {
     if (typeof this.params[0] === 'bigint') {
-        this.params[0] = PERMS.find(({ key }) => key === this.params[0])?.desc || this.params[0];
+        this.params[0] = require('./model/builtin').PERMS.find(({ key }) => key === this.params[0])?.desc || this.params[0];
     }
     return "You don't have the required permission ({0}) in this domain.";
 });
diff --git a/packages/hydrooj/src/interface.ts b/packages/hydrooj/src/interface.ts
index f7ce0cb86..d2c283ac6 100644
--- a/packages/hydrooj/src/interface.ts
+++ b/packages/hydrooj/src/interface.ts
@@ -337,7 +337,7 @@ export interface HistoryDoc {
 }
 
 // Discussion
-export { Ddoc } from './model/discussion';
+export type { Ddoc } from './model/discussion';
 declare module './model/discussion' {
     interface Ddoc {
         docType: document['TYPE_DISCUSSION'],
diff --git a/packages/hydrooj/src/loader.ts b/packages/hydrooj/src/loader.ts
index 1a41c1981..39355fcca 100644
--- a/packages/hydrooj/src/loader.ts
+++ b/packages/hydrooj/src/loader.ts
@@ -3,17 +3,6 @@
 /* eslint-disable import/no-dynamic-require */
 /* eslint-disable no-await-in-loop */
 /* eslint-disable no-eval */
-import './interface';
-import os from 'os';
-import path from 'path';
-import cluster from 'cluster';
-import fs from 'fs-extra';
-import { argv } from 'yargs';
-import wtfnode from 'wtfnode';
-import './utils';
-
-export * from './interface';
-
 if (!global.Hydro) {
     global.Hydro = {
         stat: { reqCount: 0 },
@@ -41,11 +30,19 @@ if (!global.Hydro) {
     };
     global.addons = [];
 }
-
+import './interface';
+import os from 'os';
+import path from 'path';
+import cluster from 'cluster';
+import fs from 'fs-extra';
+import { argv } from 'yargs';
+import wtfnode from 'wtfnode';
+import './utils';
 import { Logger } from './logger';
 import './ui';
 import * as bus from './service/bus';
 
+export * from './interface';
 const logger = new Logger('loader');
 logger.debug('%o', argv);
 bus.on('app/exit', () => {