diff --git a/src/migrations/20230307110038-add-setting-for-notification-retention.js b/src/migrations/20230307110038-add-setting-for-notification-retention.js
index 57e1e147ff..0b79048ee7 100644
--- a/src/migrations/20230307110038-add-setting-for-notification-retention.js
+++ b/src/migrations/20230307110038-add-setting-for-notification-retention.js
@@ -1,3 +1,5 @@
+'use strict';
+
 exports.up = function (db, cb) {
     db.runSql(
         `INSERT INTO settings(name, content) VALUES ('notifications_retention', '{"hours": 720}')`,