diff --git a/app/Http/Middleware/DuplicateSubmissionCheck.php b/app/Http/Middleware/DuplicateSubmissionCheck.php
index 49036c8eb591..813ac8e1728f 100644
--- a/app/Http/Middleware/DuplicateSubmissionCheck.php
+++ b/app/Http/Middleware/DuplicateSubmissionCheck.php
@@ -30,7 +30,7 @@ class DuplicateSubmissionCheck
             $lastPage = session(SESSION_LAST_REQUEST_PAGE);
             $lastTime = session(SESSION_LAST_REQUEST_TIME);
 
-            if ($lastPage == $path && (microtime(true) - $lastTime <= 2)) {
+            if ($lastPage == $path && (microtime(true) - $lastTime <= 1)) {
                 return redirect('/')->with('warning', trans('texts.duplicate_post'));
             }
 
diff --git a/app/Ninja/Repositories/DocumentRepository.php b/app/Ninja/Repositories/DocumentRepository.php
index e6d159115efa..450d48f2b231 100644
--- a/app/Ninja/Repositories/DocumentRepository.php
+++ b/app/Ninja/Repositories/DocumentRepository.php
@@ -215,10 +215,10 @@ class DocumentRepository extends BaseRepository
                     ['target' => '_blank']
                 )->toHtml();
             })
-            ->addColumn('document_date', function ($model) {
+            ->addColumn('created_at', function ($model) {
                 return Utils::dateToString($model->created_at);
             })
-            ->addColumn('document_size', function ($model) {
+            ->addColumn('size', function ($model) {
                 return Form::human_filesize($model->size);
             });