diff --git a/lingui.config.js b/lingui.config.js
index 14841e5d..17174142 100644
--- a/lingui.config.js
+++ b/lingui.config.js
@@ -2,6 +2,7 @@ import { LOCALES } from './src/locales';
 
 const config = {
   locales: LOCALES,
+  sourceLocale: 'en',
   pseudoLocale: 'pseudo-LOCALE',
   fallbackLocales: {
     default: 'en',