diff --git a/apps/dav/lib/Migration/Version1025Date20221114151721.php b/apps/dav/lib/Migration/Version1025Date20221114151721.php
index 110b5475261a1..38f2b18040aa7 100644
--- a/apps/dav/lib/Migration/Version1025Date20221114151721.php
+++ b/apps/dav/lib/Migration/Version1025Date20221114151721.php
@@ -34,7 +34,7 @@ public function changeSchema(IOutput $output, Closure $schemaClosure, array $opt
 		/** @var ISchemaWrapper $schema */
 		$schema = $schemaClosure();
 		$calendarObjectsTable = $schema->getTable('calendarobjects');
-		$calendarObjectsTable->addIndex(['classification'], 'calendarobject_classification_index');
+		$calendarObjectsTable->addIndex(['classification'], 'calobj_clssfction_index');
 
 		return $schema;
 	}