/**
* @param Title $title
* @param FileRepo $repo
- * @param string|int $time
+ * @param string|int|null $time
* @return self
* @throws MWException
*/
'oi_minor_mime',
'oi_user',
'oi_user_text',
- 'oi_actor' => $wgActorTableSchemaMigrationStage > MIGRATION_OLD ? 'oi_actor' : null,
+ 'oi_actor' => $wgActorTableSchemaMigrationStage > MIGRATION_OLD ? 'oi_actor' : 'NULL',
'oi_timestamp',
'oi_deleted',
'oi_sha1',