diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index e9e758a6a..2ad1b6424 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "4.4.3",
+    "version": "4.4.4",
     "bin": "bin/hydrooj.js",
     "main": "src/plugin-api",
     "module": "src/plugin-api",
diff --git a/packages/hydrooj/src/handler/record.ts b/packages/hydrooj/src/handler/record.ts
index f3b8ebfb6..9b74379bc 100644
--- a/packages/hydrooj/src/handler/record.ts
+++ b/packages/hydrooj/src/handler/record.ts
@@ -133,7 +133,7 @@ class RecordDetailHandler extends ContestDetailBaseHandler {
         const lang = langs[this.rdoc.lang]?.pretest || this.rdoc.lang;
         this.response.body = this.rdoc.code;
         this.response.type = 'text/plain';
-        this.response.disposition = `attachment; filename="${langs[lang].code_file || `foo.${this.rdoc.lang}`}"`;
+        this.response.disposition = `attachment; filename="${langs[lang]?.code_file || `foo.${this.rdoc.lang}`}"`;
     }
 
     @param('rid', Types.ObjectID)
diff --git a/packages/hydrooj/src/service/layers/response.ts b/packages/hydrooj/src/service/layers/response.ts
index 409b215ba..d65ab0e18 100644
--- a/packages/hydrooj/src/service/layers/response.ts
+++ b/packages/hydrooj/src/service/layers/response.ts
@@ -21,7 +21,11 @@ export default (logger) => async (ctx: KoaContext, next) => {
             response.body.url = response.redirect;
         }
         if (!response.type) {
-            if (
+            if (response.pjax && args.pjax) {
+                const html = await ctx.renderHTML(response.pjax, response.body);
+                response.body = { fragments: [{ html }] };
+                response.type = 'application/json';
+            } else if (
                 request.json || response.redirect
                 || request.query.noTemplate || !response.template) {
                 // Send raw data
@@ -35,9 +39,6 @@ export default (logger) => async (ctx: KoaContext, next) => {
                     response.body = new SystemError('Serialize failure', e.message);
                 }
                 response.type = 'application/json';
-            } else if (response.pjax && args.pjax) {
-                const html = await ctx.renderHTML(response.pjax, response.body);
-                response.body = { fragments: [{ html }] };
             } else if (response.template) {
                 const s = response.template.split('.');
                 let templateName = `${s[0]}.${args.domainId}.${s[1]}`;