diff --git a/app/DoctrineMigrations/Version20190401105353.php b/app/DoctrineMigrations/Version20190401105353.php
index 94ebb1ab5..d27962dbe 100644
--- a/app/DoctrineMigrations/Version20190401105353.php
+++ b/app/DoctrineMigrations/Version20190401105353.php
@@ -24,7 +24,7 @@ class Version20190401105353 extends WallabagMigration
             'notnull' => false,
         ]);
 
-        $entryTable->addIndex(['user_id', 'hashed_url'], 'hashed_url_user_id');
+        $entryTable->addIndex(['user_id', 'hashed_url'], 'hashed_url_user_id', [], ['lengths' => [null, 40]]);
     }
 
     /**
diff --git a/src/Wallabag/CoreBundle/Entity/Entry.php b/src/Wallabag/CoreBundle/Entity/Entry.php
index faf4d2598..c3fb87d21 100644
--- a/src/Wallabag/CoreBundle/Entity/Entry.php
+++ b/src/Wallabag/CoreBundle/Entity/Entry.php
@@ -26,7 +26,7 @@ use Wallabag\UserBundle\Entity\User;
  *     indexes={
  *         @ORM\Index(name="created_at", columns={"created_at"}),
  *         @ORM\Index(name="uid", columns={"uid"}),
- *         @ORM\Index(name="hashed_url_user_id", columns={"user_id", "hashed_url"})
+ *         @ORM\Index(name="hashed_url_user_id", columns={"user_id", "hashed_url"}, options={"lengths"={null, 40}})
  *     }
  * )
  * @ORM\HasLifecycleCallbacks()