diff --git a/core/lib/Thelia/Tests/Action/RewrittenUrlTestTrait.php b/core/lib/Thelia/Tests/Action/RewrittenUrlTestTrait.php
index 567fbe3d9..46f28d7f5 100644
--- a/core/lib/Thelia/Tests/Action/RewrittenUrlTestTrait.php
+++ b/core/lib/Thelia/Tests/Action/RewrittenUrlTestTrait.php
@@ -5,6 +5,7 @@ use Propel\Runtime\ActiveQuery\Criteria;
 use Thelia\Exception\UrlRewritingException;
 use Thelia\Model\Base\RewritingUrlQuery;
 use Thelia\Model\ConfigQuery;
+use Thelia\Model\ProductQuery;
 use Thelia\Rewriting\RewritingResolver;
 use Thelia\Tools\URL;
 
@@ -81,6 +82,17 @@ trait RewrittenUrlTestTrait
         $this->assertEquals($oldUrlEntry->getRedirected(), $newUrlEntry->getId());
 
         /* we can reassign old Url to another object */
-        //@todo
+        $aRandomProduct = ProductQuery::create()
+            ->filterById($object->getId(), Criteria::NOT_EQUAL)
+            ->findOne();
+
+        $failReassign = true;
+        try {
+            $aRandomProduct->setRewrittenUrl($aRandomProduct->getLocale(), $currentUrl);
+            $failReassign = false;
+        } catch(\Exception $e) {
+        }
+
+        $this->assertFalse($failReassign);
     }
 }
\ No newline at end of file