diff --git a/packages/vjudge/package.json b/packages/vjudge/package.json
index a110b0751..1563d38d4 100644
--- a/packages/vjudge/package.json
+++ b/packages/vjudge/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@hydrooj/vjudge",
-    "version": "1.4.2",
+    "version": "1.4.3",
     "description": "Submit problems to remote oj",
     "main": "package.json",
     "repository": "https://github.com/hydro-dev/Hydro.git",
diff --git a/packages/vjudge/src/providers/poj.ts b/packages/vjudge/src/providers/poj.ts
index 8897f38a1..d50f3d7fc 100644
--- a/packages/vjudge/src/providers/poj.ts
+++ b/packages/vjudge/src/providers/poj.ts
@@ -200,6 +200,7 @@ export default class POJProvider implements IBasicProvider {
     }
 
     async submitProblem(id: string, lang: string, code: string, info) {
+        await this.ensureLogin();
         const language = lang.includes('poj.') ? lang.split('poj.')[1] : '0';
         const comment = setting.langs[lang].comment;
         if (comment) {