diff --git a/Controllers/kagiSummarizerController.php b/Controllers/kagiSummarizerController.php
index 3fa1b84..eadc929 100644
--- a/Controllers/kagiSummarizerController.php
+++ b/Controllers/kagiSummarizerController.php
@@ -9,7 +9,7 @@ class FreshExtension_kagiSummarizer_Controller extends Minz_ActionController {
     if ($kagi_token === null || trim($kagi_token) ==='') {
       echo json_encode(array(
         'response' => array(
-          'output_text' => 'No Kagi token configured.',
+          'output_text' => _t('ext.kagiSummarizer.ui.no_token_configured'),
           'error' => 'configuration'),
         'status' => 200));
       return;
diff --git a/i18n/en/ext.php b/i18n/en/ext.php
index 9860ca1..b3577fc 100644
--- a/i18n/en/ext.php
+++ b/i18n/en/ext.php
@@ -9,7 +9,8 @@ return array(
     'ui' => array(
       'summarize_button' => 'Summarize',
       'loading_summary' => 'Loading summary...',
-      'error' => 'Error retrieving summary.'
+      'error' => 'Error retrieving summary.',
+      'no_token_configured' => 'No Kagi token configured.'
     )
   )
 );