diff --git a/client/coral-framework/services/i18n.js b/client/coral-framework/services/i18n.js
index 1a4910b21..87e375853 100644
--- a/client/coral-framework/services/i18n.js
+++ b/client/coral-framework/services/i18n.js
@@ -13,7 +13,7 @@ import pt_BR from '../../../locales/pt_BR.yml';
 
 // Translations are happening at https://translate.lingohub.com/the-coral-project/dashboard
 
-const defaultLanguage = 'en';
+const defaultLanguage = process.env.TALK_DEFAULT_LANG;
 const translations = {...en, ...es, ...fr, ...pt_BR};
 
 let lang;
diff --git a/docs/_docs/running-advanced-configuration.md b/docs/_docs/running-advanced-configuration.md
index 5512f60cb..7db27fb1c 100644
--- a/docs/_docs/running-advanced-configuration.md
+++ b/docs/_docs/running-advanced-configuration.md
@@ -24,6 +24,10 @@ otherwise the application will fail to start.
 Configure the duration for which comment counts are cached for, parsed by
 [ms](https://www.npmjs.com/package/ms){:target="_blank"}. (Default `1hr`)
 
+## TALK_DEFAULT_LANG
+
+Specify the default translation language. (Default `en`)
+
 ## TALK_DEFAULT_STREAM_TAB
 
 Specify the default stream tab in the admin. (Default `all`)
@@ -439,4 +443,4 @@ Could be read as:
   again, then they must have two of their comments approved in order to get
   added back to the queue.
 - At the moment of writing, behavior is not attached to the flagging
-  reliability, but it is recorded.
\ No newline at end of file
+  reliability, but it is recorded.
diff --git a/webpack.config.js b/webpack.config.js
index c555333bc..d9c8ba4a0 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -111,7 +111,8 @@ const config = {
     new webpack.EnvironmentPlugin({
       'TALK_PLUGINS_JSON': '{}',
       'TALK_THREADING_LEVEL': '3',
-      'TALK_DEFAULT_STREAM_TAB': 'all'
+      'TALK_DEFAULT_STREAM_TAB': 'all',
+      'TALK_DEFAULT_LANG': 'en'
     })
   ],
   resolveLoader: {