diff --git a/packages/hydrojudge/package.json b/packages/hydrojudge/package.json
index c2f6462d..0c404d8a 100644
--- a/packages/hydrojudge/package.json
+++ b/packages/hydrojudge/package.json
@@ -1,9 +1,10 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.1.11",
+    "version": "2.1.12",
     "main": "package.json",
     "author": "masnn",
+    "repository": "https://github.com/hydro-dev/Hydro.git",
     "dependencies": {
         "axios": "^0.21.0",
         "bson": "^4.1.0",
diff --git a/packages/hydrojudge/src/check.ts b/packages/hydrojudge/src/check.ts
index 00482b85..4c67e1f0 100644
--- a/packages/hydrojudge/src/check.ts
+++ b/packages/hydrojudge/src/check.ts
@@ -22,7 +22,7 @@ export async function check(config): Promise<[number, number, string]> {
 }
 
 export async function compileChecker(checkerType: string, checker: string, copyIn: any) {
-    if (!checkers[checkerType]) { throw new SystemError(`未知比较器类型：${checkerType}`); }
+    if (!checkers[checkerType]) throw new SystemError(`未知比较器类型：${checkerType}`);
     const file = await fs.readFile(checker);
     // TODO cache compiled checker
     return await compile(parseFilename(checker).split('.')[1], file.toString(), 'checker', copyIn);
diff --git a/packages/hydrojudge/src/judge/default.ts b/packages/hydrojudge/src/judge/default.ts
index 3d785642..e06487a4 100644
--- a/packages/hydrojudge/src/judge/default.ts
+++ b/packages/hydrojudge/src/judge/default.ts
@@ -123,7 +123,9 @@ export const judge = async (ctx) => {
             return await compile(ctx.lang, ctx.code, 'code', copyIn, ctx.next);
         })(),
         (async () => {
-            if (!ctx.config.checker_type || ctx.config.checker_type === 'default') return null;
+            if (!ctx.config.checker_type || ctx.config.checker_type === 'default') {
+                return { execute: '', copyIn: {}, clean: Promise.resolve };
+            }
             const copyIn = {};
             for (const file of ctx.config.judge_extra_files) {
                 copyIn[parseFilename(file)] = { src: file };
@@ -135,8 +137,7 @@ export const judge = async (ctx) => {
             );
         })(),
     ]);
-    if (ctx.checker) ctx.clean.push(ctx.checker.clean);
-    ctx.clean.push(ctx.execute.clean);
+    ctx.clean.push(ctx.execute.clean, ctx.checker.clean);
     ctx.next({ status: STATUS.STATUS_JUDGING, progress: 0 });
     const tasks = [];
     ctx.total_status = 0;