diff --git a/apps/theming/lib/Migration/InitBackgroundImagesMigration.php b/apps/theming/lib/Migration/InitBackgroundImagesMigration.php
index 04c6a84d19a..ff8783196ac 100644
--- a/apps/theming/lib/Migration/InitBackgroundImagesMigration.php
+++ b/apps/theming/lib/Migration/InitBackgroundImagesMigration.php
@@ -43,6 +43,6 @@ class InitBackgroundImagesMigration implements \OCP\Migration\IRepairStep {
 	}
 
 	public function run(IOutput $output) {
-		$this->jobList->add(MigrateBackgroundImages::class, ['stage' => 'prepare']);
+		$this->jobList->add(MigrateBackgroundImages::class, ['stage' => MigrateBackgroundImages::STAGE_PREPARE]);
 	}
 }