diff --git a/bin/maintenance b/bin/maintenance
index fcf33890a3..1cc2760600 100755
--- a/bin/maintenance
+++ b/bin/maintenance
@@ -6,6 +6,7 @@ use Alchemy\Phrasea\Command\Maintenance\CleanNotifications;
 use Alchemy\Phrasea\Command\Maintenance\CleanUsers;
 use Alchemy\Phrasea\Core\Version;
 use Alchemy\Phrasea\Command\Maintenance\CleanRecords;
+use Alchemy\Phrasea\Command\Maintenance\CleanBases;
 
 require_once __DIR__ . '/../lib/autoload.php';
 
@@ -32,4 +33,6 @@ $cli->command(new CleanRecords());
 
 $cli->command(new CleanUsers());
 
+$cli->command(new CleanBases());
+
 $cli->run();
diff --git a/lib/Alchemy/Phrasea/Command/Maintenance/CleanBases.php b/lib/Alchemy/Phrasea/Command/Maintenance/CleanBases.php
new file mode 100644
index 0000000000..d922f475e7
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Command/Maintenance/CleanBases.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace Alchemy\Phrasea\Command\Maintenance;
+
+use Alchemy\Phrasea\Collection\Reference\CollectionReference;
+use Alchemy\Phrasea\Collection\Reference\DbalCollectionReferenceRepository;
+use Alchemy\Phrasea\Command\Command;
+use Alchemy\Phrasea\Databox\DataboxRepository;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class CleanBases extends Command
+{
+    public function __construct()
+    {
+        parent::__construct('clean:bases');
+
+        $this
+            ->setDescription('remove orphan collections ')
+            ->addOption('orphan', null, InputOption::VALUE_NONE, 'remove collections bas that refers a non existing sbas')
+        ;
+    }
+
+    protected function doExecute(InputInterface $input, OutputInterface $output)
+    {
+        /** @var DbalCollectionReferenceRepository $dbalCollectionReferenceRepository */
+        $dbalCollectionReferenceRepository = $this->container['repo.collection-references'];
+
+        /** @var DataboxRepository $databoxRepository */
+        $databoxRepository = $this->container['repo.databoxes'];
+
+        if ($input->getOption('orphan') === true) {
+            /** @var CollectionReference $collectionReference */
+            foreach ($dbalCollectionReferenceRepository->findAll() as $collectionReference) {
+                if ($databoxRepository->find($collectionReference->getDataboxId()) == null) {
+                    // if the databox of the collectionReference not found, remove the collectionReference (bas)
+                    try {
+                        $dbalCollectionReferenceRepository->delete($collectionReference);
+                    } catch (\Exception $e) {
+                        $output->writeln("Can't delete bas with base_id = " . $collectionReference->getBaseId());
+                    }
+                }
+            }
+        } else {
+            $output->writeln("No given options!");
+        }
+    }
+}
diff --git a/lib/Alchemy/Phrasea/Command/Maintenance/CleanRecords.php b/lib/Alchemy/Phrasea/Command/Maintenance/CleanRecords.php
index ae745bbf53..9761e32f6d 100644
--- a/lib/Alchemy/Phrasea/Command/Maintenance/CleanRecords.php
+++ b/lib/Alchemy/Phrasea/Command/Maintenance/CleanRecords.php
@@ -24,9 +24,7 @@ class CleanRecords extends Command
 
     protected function doExecute(InputInterface $input, OutputInterface $output)
     {
-        $fromBaskets = $input->getOption('from_baskets');
-
-        if ($fromBaskets === true) {
+        if ($input->getOption('from_baskets') === true) {
             $output->writeln("<info> Remove orphans records from basket</info>");
             $this->removeOrphansFromBasket();
         }