diff --git a/public/teamtable/edit/delete.php b/public/teamtable/edit/delete.php
index 9069c50..6c85ff7 100644
--- a/public/teamtable/edit/delete.php
+++ b/public/teamtable/edit/delete.php
@@ -3,7 +3,7 @@
 use App\Teamtable\Team;
 
 $item    = filter_input(INPUT_GET, 'item', FILTER_VALIDATE_INT);
-$confirm = filter_input(INPUT_GET, 'confirm', FILTER_VALIDATE_BOOL);
+$confirm = filter_input(INPUT_GET, 'confirm', FILTER_VALIDATE_BOOLEAN);
 
 $model = $app->model('Teamtable');