diff --git a/src/Core/Controller/CollectionController.php b/src/Core/Controller/CollectionController.php
index 9bed76323f..c8d80b48c5 100644
--- a/src/Core/Controller/CollectionController.php
+++ b/src/Core/Controller/CollectionController.php
@@ -192,6 +192,7 @@ abstract class CollectionController extends FeedController
         return [
             '_template'      => 'collections/collections.html.twig',
             'page_title'     => $this->page_title,
+            'list_title'     => 'Your ' . $this->plural_slug,
             'add_collection' => $create?->createView(),
             'fn'             => $fn,
             'collections'    => $collections,
diff --git a/src/Core/Modules/Collection.php b/src/Core/Modules/Collection.php
index 47ba9e0999..4421048989 100644
--- a/src/Core/Modules/Collection.php
+++ b/src/Core/Modules/Collection.php
@@ -76,6 +76,9 @@ abstract class Collection extends Plugin
         foreach ($collections as $col) {
             $choices[$col->getName()] = $col->getId();
         }
+
+        $collections = array_map(fn ($x) => $x->getId(), $collections);
+
         $already_selected = $this->getCollectionsBy($user, $vars, true);
         $add_form         = Form::create([
             ['collections', ChoiceType::class, [
@@ -98,9 +101,9 @@ abstract class Collection extends Plugin
         ]);
         $add_form->handleRequest($request);
         if ($add_form->isSubmitted() && $add_form->isValid()) {
-            $collections = $add_form->getData()['collections'];
-            $removed     = array_filter($already_selected, fn ($x) => !\in_array($x, $collections));
-            $added       = array_filter($collections, fn ($x) => !\in_array($x, $already_selected));
+            $selected = $add_form->getData()['collections'];
+            $removed  = array_filter($already_selected, fn ($x) => !\in_array($x, $selected));
+            $added    = array_filter($selected, fn ($x) => !\in_array($x, $already_selected));
             if (\count($removed) > 0) {
                 $this->removeItems($user, $vars, $removed, $collections);
             }
diff --git a/templates/collections/collections.html.twig b/templates/collections/collections.html.twig
index 7dd761f3aa..f2d209fc37 100644
--- a/templates/collections/collections.html.twig
+++ b/templates/collections/collections.html.twig
@@ -19,7 +19,7 @@
                 </div>
             {% endif %}
             <div class="h-entry hentry note collections-list">
-                <h3>{{ 'Your collections' | trans }}</h3>
+                <h3>{{ list_title | trans }}</h3>
                 {% for col in collections %}
                         <div class="collection-item">
                         <a class="name" href="{{ fn.getUrl(col.id) }}">{{ col.name }}</a>