diff --git a/js/modules/i18n.js b/js/modules/i18n.js
index 5ed168ec4..09a5eb96c 100644
--- a/js/modules/i18n.js
+++ b/js/modules/i18n.js
@@ -1,7 +1,5 @@
 /* eslint-env node */
 
-'use strict';
-
 exports.setup = (locale, messages) => {
   if (!locale) {
     throw new Error('i18n: locale parameter is required');