diff --git a/src/Bundle/ChillMainBundle/Controller/ExportController.php b/src/Bundle/ChillMainBundle/Controller/ExportController.php
index 3aaac9a68..190d5f1bf 100644
--- a/src/Bundle/ChillMainBundle/Controller/ExportController.php
+++ b/src/Bundle/ChillMainBundle/Controller/ExportController.php
@@ -281,7 +281,7 @@ class ExportController extends AbstractController
         $options = match ($step) {
             'export', 'generate_export' => [
                 'export_alias' => $alias,
-                'picked_centers' => $exportManager->getPickedCenters($data['centers']),
+                'picked_centers' => $exportManager->getPickedCenters($data['centers'] ?? []),
             ],
             'formatter', 'generate_formatter' => [
                 'export_alias' => $alias,
@@ -339,9 +339,9 @@ class ExportController extends AbstractController
         $exportManager = $this->exportManager;
 
         // check we have data from the previous step (export step)
-        $data = $this->session->get('centers_step', null);
+        $data = $this->session->get('centers_step', []);
 
-        if (null === $data) {
+        if (null === $data && true === $this->filterStatsByCenters) {
             return $this->redirectToRoute('chill_main_export_new', [
                 'step' => $this->getNextStep('export', $export, true),
                 'alias' => $alias,