diff --git a/src/AppBundle/Command/LoadRelationCommand.php b/src/AppBundle/Command/LoadRelationCommand.php
index d224dfd..055806b 100644
--- a/src/AppBundle/Command/LoadRelationCommand.php
+++ b/src/AppBundle/Command/LoadRelationCommand.php
@@ -2,8 +2,11 @@
 
 namespace AppBundle\Command;
 
+use AppBundle\Service\Loader\RelationLoader;
 use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
+use Symfony\Component\Console\Input\InputDefinition;
 use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
 
 class LoadRelationCommand extends ContainerAwareCommand
@@ -13,11 +16,17 @@ class LoadRelationCommand extends ContainerAwareCommand
         $this
             ->setName('app:load:relations')
             ->setDescription('Loads relations between LDraw models and Rebrickable parts.')
-            ->setHelp('This command allows you to load relation between models and parts into database.');
+            ->setHelp('This command allows you to load relation between models and parts into database.')
+            ->setDefinition(
+                new InputDefinition([
+                    new InputOption('rewrite', 'r', InputOption::VALUE_NONE, 'Reload relations for all Rebrickable parts.'),
+                ])
+            );
     }
 
     protected function execute(InputInterface $input, OutputInterface $output)
     {
+        /** @var RelationLoader $relationLoader */
         $relationLoader = $this->getContainer()->get('service.loader.relation');
         $relationLoader->setOutput($output);
 
@@ -27,7 +36,11 @@ class LoadRelationCommand extends ContainerAwareCommand
             '<fg=cyan>------------------------------------------------------------------------------</>',
         ]);
 
-        $relationLoader->loadAll();
+        if ($input->getOption('rewrite')) {
+            $relationLoader->loadAll();
+        } else {
+            $relationLoader->loadNotPaired();
+        }
 
         $output->writeln(['<info>Done!</info>']);
     }
diff --git a/src/AppBundle/Service/Loader/RelationLoader.php b/src/AppBundle/Service/Loader/RelationLoader.php
index 87fc393..16f2c60 100644
--- a/src/AppBundle/Service/Loader/RelationLoader.php
+++ b/src/AppBundle/Service/Loader/RelationLoader.php
@@ -39,7 +39,7 @@ class RelationLoader extends BaseLoader
         $this->load($parts);
     }
 
-    public function loadNotPaired($parts)
+    public function loadNotPaired()
     {
         $parts = $this->partRepository->findAllNotPaired();
         $this->load($parts);