diff --git a/views/submission.ejs b/views/submission.ejs
index 2715197..bc9e671 100644
--- a/views/submission.ejs
+++ b/views/submission.ejs
@@ -352,7 +352,7 @@ if (token != null) {
       socket.emit('join', token, function (data) {
         console.log("join! ", data);
         if (data && data.ok) {
-          if (data.finished && data.result && data.result.judge) {
+          if (data.finished && data.result && data.result.judge && data.result.judge.subtasks) {
             let max=0;
             data.result.judge.subtasks.forEach(function (item) {
               item.cases.forEach(function (one) {
diff --git a/views/submission_contest.ejs b/views/submission_contest.ejs
index e4484d9..4bd7ab8 100644
--- a/views/submission_contest.ejs
+++ b/views/submission_contest.ejs
@@ -337,7 +337,7 @@ if (token != null) {
       socket.on('finish', function (p) {
         console.log("Judge finished");
         let max=0;
-        if (p && p.result && p.result.judge) {
+        if (p && p.result && p.result.judge && p.result.judge.subtasks) {
           p.result.judge.subtasks.forEach(function (item) {
             item.cases.forEach(function (one) {
               max = one.result.time
@@ -353,7 +353,7 @@ if (token != null) {
       socket.emit('join', token, function (data) {
         console.log("join! ", data);
         if (data && data.ok) {
-          if (data.finished && data.result && data.result.judge) {
+          if (data.finished && data.result && data.result.judge && data.result.judge.subtasks) {
             let max=0;
             data.result.judge.subtasks.forEach(function (item) {
               item.cases.forEach(function (one) {