diff --git a/apps_fr.md b/apps_fr.md
index f14c6ee6..9d9d635c 100644
--- a/apps_fr.md
+++ b/apps_fr.md
@@ -39,7 +39,7 @@ $(document).ready(function () {
   $.getJSON('/list.json', function(app_list) {
     console.log(app_list);
     $.each(app_list, function(app_id, infos) {
-      if (typeof infos.manifest.description.fr === undefined) {
+      if (typeof infos.manifest.description.fr === 'undefined') {
         infos.manifest.description.fr = infos.manifest.description.en;
       }
       html = $('#app-template').html()