diff --git a/lib/Alchemy/Phrasea/SearchEngine/SearchEngineOptions.php b/lib/Alchemy/Phrasea/SearchEngine/SearchEngineOptions.php
index 72a5b6563c..acb05fd15d 100644
--- a/lib/Alchemy/Phrasea/SearchEngine/SearchEngineOptions.php
+++ b/lib/Alchemy/Phrasea/SearchEngine/SearchEngineOptions.php
@@ -653,11 +653,14 @@ class SearchEngineOptions
         }
 
         $bas = array_filter($bas, function ($collection) use ($app) {
-            if ($app['authentication']->isAuthenticated()) {
-                return $app['authentication']->getUser()->ACL()->has_access_to_base($collection->get_base_id());
-            } else {
-                return in_array($collection, $app->getOpenCollections());
+            if($collection !== null) {
+                if ($app['authentication']->isAuthenticated()) {
+                    return $app['authentication']->getUser()->ACL()->has_access_to_base($collection->get_base_id());
+                } else {
+                    return in_array($collection, $app->getOpenCollections());
+                }
             }
+            return false; // CollectionNotFound
         });
 
         $databoxes = array();
diff --git a/www/skins/prod/jquery.main-prod.js b/www/skins/prod/jquery.main-prod.js
index 25a2689b88..b9bf5937fa 100644
--- a/www/skins/prod/jquery.main-prod.js
+++ b/www/skins/prod/jquery.main-prod.js
@@ -760,9 +760,9 @@ $(document).ready(function () {
         var $this = $(this);
         var $record_types = $('#recordtype_sel');
         if ($this.hasClass('mode_type_reg')) {
-            $record_types.attr('disabled', true);
+            $record_types.hide();
         } else {
-            $record_types.removeAttr('disabled');
+            $record_types.show();
         }
     });