diff --git a/public/scripts/i18n.js b/public/scripts/i18n.js
index c4e837939..6eff386d5 100644
--- a/public/scripts/i18n.js
+++ b/public/scripts/i18n.js
@@ -5,7 +5,9 @@ const storageKey = 'language';
 const overrideLanguage = localStorage.getItem(storageKey);
 const localeFile = String(overrideLanguage || navigator.language || navigator.userLanguage || 'en').toLowerCase();
 const langs = await fetch('/locales/lang.json').then(response => response.json());
-const localeData = await getLocaleData(localeFile);
+// Don't change to let/const! It will break module loading.
+// eslint-disable-next-line prefer-const
+var localeData = await getLocaleData(localeFile);
 
 /**
  * Fetches the locale data for the given language.