diff --git a/demo/src/app.js b/demo/src/app.js
index da8fd2df..6df84160 100644
--- a/demo/src/app.js
+++ b/demo/src/app.js
@@ -76,6 +76,7 @@ import {
     treeview_finder_en,
     treeview_finder_fr,
 } from '../../src/index';
+import translations from "./demo_intl";
 
 import PowsyblLogo from '-!@svgr/webpack!../images/powsybl_logo.svg';
 import AppPackage from '../../package.json';
@@ -121,6 +122,7 @@ const messages = {
         ...flat_parameters_en,
         ...multiple_selection_dialog_en,
         ...inputs_en,
+        ...translations.en,
     },
     fr: {
         ...report_viewer_fr,
@@ -134,6 +136,7 @@ const messages = {
         ...flat_parameters_fr,
         ...multiple_selection_dialog_fr,
         ...inputs_fr,
+        ...translations.fr,
     },
 };
 
diff --git a/demo/src/demo_intl.js b/demo/src/demo_intl.js
new file mode 100644
index 00000000..7e86cc86
--- /dev/null
+++ b/demo/src/demo_intl.js
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2023, RTE (http://www.rte-france.com)
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+const translations = {
+    fr: {
+        'close': 'Fermer',
+    },
+    en: {
+        'close': 'Close',
+    },
+};
+export default translations;