diff --git a/src/Bundle/ChillTaskBundle/Controller/SingleTaskController.php b/src/Bundle/ChillTaskBundle/Controller/SingleTaskController.php
index 3523c7a58..4c6ab338f 100644
--- a/src/Bundle/ChillTaskBundle/Controller/SingleTaskController.php
+++ b/src/Bundle/ChillTaskBundle/Controller/SingleTaskController.php
@@ -306,7 +306,7 @@ final class SingleTaskController extends AbstractController
 
         $flags = array_merge(
             $filterOrder->getCheckboxData('status'),
-            array_map(static fn ($i) => 'state_' . $i, $filterOrder->getCheckboxData('states'))
+            array_map(static fn ($i) => 'state_' . $i, $filterOrder->hasCheckboxData('states') ? $filterOrder->getCheckboxData('states') : [])
         );
         $nb = $this->singleTaskAclAwareRepository->countByAllViewable(
             $filterOrder->getQueryString(),
@@ -353,7 +353,7 @@ final class SingleTaskController extends AbstractController
         $filterOrder = $this->buildFilterOrder();
         $flags = array_merge(
             $filterOrder->getCheckboxData('status'),
-            array_map(static fn ($i) => 'state_' . $i, $filterOrder->getCheckboxData('states'))
+            array_map(static fn ($i) => 'state_' . $i, $filterOrder->hasCheckboxData('states') ? $filterOrder->getCheckboxData('states') : [])
         );
         $nb = $this->singleTaskAclAwareRepository->countByCourse(
             $course,
@@ -402,7 +402,7 @@ final class SingleTaskController extends AbstractController
         $filterOrder = $this->buildFilterOrder();
         $flags = array_merge(
             $filterOrder->getCheckboxData('status'),
-            array_map(static fn ($i) => 'state_' . $i, $filterOrder->getCheckboxData('states'))
+            array_map(static fn ($i) => 'state_' . $i, $filterOrder->hasCheckboxData('states') ? $filterOrder->getCheckboxData('states') : [])
         );
         $nb = $this->singleTaskAclAwareRepository->countByPerson(
             $person,
@@ -457,7 +457,7 @@ final class SingleTaskController extends AbstractController
         $filterOrder = $this->buildFilterOrder(false);
         $flags = array_merge(
             $filterOrder->getCheckboxData('status'),
-            array_map(static fn ($i) => 'state_' . $i, $filterOrder->getCheckboxData('states'))
+            array_map(static fn ($i) => 'state_' . $i, $filterOrder->hasCheckboxData('states') ? $filterOrder->getCheckboxData('states') : [])
         );
         $nb = $this->singleTaskAclAwareRepository->countByCurrentUsersTasks(
             $filterOrder->getQueryString(),
@@ -677,15 +677,19 @@ final class SingleTaskController extends AbstractController
             'Tasks near deadline',
             'Tasks over deadline',
         ];
-        $states = $this->singleTaskStateRepository->findAllExistingStates();
-        $checked = array_values(array_filter($states, fn (string $state) => !in_array($state, ['closed', 'canceled', 'validated'], true)));
 
         $filterBuilder = $this->filterOrderHelperFactory
             ->create(self::class)
             ->addSearchBox()
-            ->addCheckbox('status', $statuses, $statuses, $statusTrans)
-            ->addCheckbox('states', $states, $checked)
-        ;
+            ->addCheckbox('status', $statuses, $statuses, $statusTrans);
+
+        $states = $this->singleTaskStateRepository->findAllExistingStates();
+        $checked = array_values(array_filter($states, fn (string $state) => !in_array($state, ['closed', 'canceled', 'validated'], true)));
+
+        if ([] !== $states) {
+            $filterBuilder
+                ->addCheckbox('states', $states, $checked);
+        }
 
         if ($includeFilterByUser) {
             $filterBuilder