diff --git a/php.ini b/php.ini
index e7b8ad0..e9fa75b 100644
--- a/php.ini
+++ b/php.ini
@@ -1,4 +1,4 @@
 upload_max_filesize = 40M
 post_max_size = 40M
-memory_limit = 256M
+memory_limit = 512M
 
diff --git a/src/Controller/MapController.php b/src/Controller/MapController.php
index ef3db85..e0fa418 100644
--- a/src/Controller/MapController.php
+++ b/src/Controller/MapController.php
@@ -14,7 +14,7 @@ class MapController extends AbstractController
     #[Route('/popup', name: 'app_map_popup')]
     public function popup(Request $request): Response
     {
-        // Grosso modo, on récuère les données de la feature correspondante
+        // Grosso modo, on récupère les données de la feature correspondante
         // Cf `assets/controllers/map_controller.js`
         $element = json_decode($request->query->get('element'), true);
 
diff --git a/src/Controller/TaskController.php b/src/Controller/TaskController.php
index ea0db01..9165e06 100644
--- a/src/Controller/TaskController.php
+++ b/src/Controller/TaskController.php
@@ -110,7 +110,7 @@ class TaskController extends AbstractController
         $josmCommands = [
             // Charge l’imagerie (fond OSM par défaut)
             'imagery' => [
-                'id' => $project->hasImagery() ? $project->getImagery() : 'osmfr',
+                (($project->hasImagery() and substr($project->getImagery(), 0, 4) === 'http') ? 'url' : 'id') => ($project->hasImagery() ? $project->getImagery() : 'osmfr'),
             ],
         ];
 
diff --git a/src/Form/CsvType.php b/src/Form/CsvType.php
index 3701a11..de25cf5 100644
--- a/src/Form/CsvType.php
+++ b/src/Form/CsvType.php
@@ -17,7 +17,7 @@ class CsvType extends AbstractType
                 'label' => 'Fichier CSV',
                 'constraints' => [
                     new File([
-                        'maxSize' => '10M',
+                        'maxSize' => '40M',
                         'mimeTypes' => [
                             'text/csv',
                             'text/plain',
diff --git a/src/Form/TaskType.php b/src/Form/TaskType.php
index d45ff58..4153dda 100644
--- a/src/Form/TaskType.php
+++ b/src/Form/TaskType.php
@@ -30,6 +30,7 @@ class TaskType extends AbstractType
                 'required' => false,
                 'help_html' => true,
                 'help' => 'XML décrivant ce qu’il faut charger dans la feuille de données de JOSM (cf <a href="https://wiki.openstreetmap.org/wiki/FR:OSM_XML" target="_blank">FR:OSM XML - OpenStreetMap Wiki</a>)',
+                'empty_data' => '',
             ])
             ->add('status', TaskLifecycleType::class, [
                 'label' => 'État',
diff --git a/src/Service/OverpassClient.php b/src/Service/OverpassClient.php
index 61d7fef..823a2a5 100644
--- a/src/Service/OverpassClient.php
+++ b/src/Service/OverpassClient.php
@@ -12,7 +12,7 @@ class OverpassClient
     ) {
     }
 
-    public function query($query, $prefix = '[out:json][timeout:25];', $suffix = 'out geom;')
+    public function query($query, $prefix = '[out:json][timeout:60];', $suffix = 'out geom;')
     {
         $response = $this->client->request('GET', 'https://overpass-api.de/api/interpreter', [
             'query' => [