diff --git a/app/Template/board/table_container.php b/app/Template/board/table_container.php
index bfa98eda9..2289eaf05 100644
--- a/app/Template/board/table_container.php
+++ b/app/Template/board/table_container.php
@@ -1,5 +1,5 @@
 <div id="board-container"
-     class="<?= ($project['task_limit'] && $project['nb_active_tasks'] > $project['task_limit']) ? 'board-task-list-limit' : '' ?>">
+     class="<?= ($project['task_limit'] && array_key_exists('nb_active_tasks', $project) && $project['nb_active_tasks'] > $project['task_limit']) ? 'board-task-list-limit' : '' ?>">
     <?php if (empty($swimlanes) || empty($swimlanes[0]['nb_columns'])): ?>
         <p class="alert alert-error"><?= t('There is no column or swimlane activated in your project!') ?></p>
     <?php else: ?>