diff --git a/lib/conf.d/migrations.yml b/lib/conf.d/migrations.yml
index 5d58335458..2cc0b1cde8 100644
--- a/lib/conf.d/migrations.yml
+++ b/lib/conf.d/migrations.yml
@@ -60,9 +60,6 @@ migrations:
   migration19:
       version: token
       class: Alchemy\Phrasea\Setup\DoctrineMigrations\TokenMigration
-  migration20:
-      version: api
-      class: Alchemy\Phrasea\Setup\DoctrineMigrations\ApiMigration
   migration21:
       version: aggregate-token
       class: Alchemy\Phrasea\Setup\DoctrineMigrations\AggregateTokenMigration