diff --git a/lib/Alchemy/Phrasea/Setup/DoctrineMigrations/AbstractMigration.php b/lib/Alchemy/Phrasea/Setup/DoctrineMigrations/AbstractMigration.php
index 8ce41c2e38..89a0a497f9 100644
--- a/lib/Alchemy/Phrasea/Setup/DoctrineMigrations/AbstractMigration.php
+++ b/lib/Alchemy/Phrasea/Setup/DoctrineMigrations/AbstractMigration.php
@@ -54,7 +54,7 @@ abstract class AbstractMigration extends BaseMigration
     /**
      * @inheritdoc
      */
-    public function up(Schema $schema)
+    final public function up(Schema $schema)
     {
         $this->abortIf($this->connection->getDatabasePlatform()->getName() != "mysql", "Migration can only be executed safely on 'mysql'.");
 
@@ -66,7 +66,7 @@ abstract class AbstractMigration extends BaseMigration
     /**
      * @inheritdoc
      */
-    public function down(Schema $schema)
+    final public function down(Schema $schema)
     {
         $this->abortIf($this->connection->getDatabasePlatform()->getName() != "mysql", "Migration can only be executed safely on 'mysql'.");