--- a/browser/metro/chrome/config.dtd
+++ b/browser/metro/chrome/config.dtd
@@ -1,16 +1,16 @@
 <!-- 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/. -->
 
 <!ENTITY empty.label            "Rechercher">
-<!ENTITY newpref.label          "Ajouter une nouvelle option">
 <!ENTITY addpref.name           "Nom">
-<!ENTITY addpref.value          "Valeur">
 
 <!ENTITY cancel.label           "Annuler">
-<!ENTITY reset.label            "Réinitialiser">
-<!ENTITY done.label             "Terminé">
+<!ENTITY toggle.label           "Basculer">
 
 <!ENTITY integer.label          "Nombre entier">
 <!ENTITY string.label           "Chaîne de caractères">
 <!ENTITY boolean.label          "Valeur booléenne">
+
+<!ENTITY string.placeholder     "Saisir une chaîne de caractères">
+<!ENTITY number.placeholder     "Saisir un nombre">

new file mode 100644
--- /dev/null
+++ b/browser/metro/chrome/config.properties
@@ -0,0 +1,10 @@
+# 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/.
+
+newPref.createButton=Créer
+newPref.privateButton=Privée
+newPref.changeButton=Modifier
+
+pref.toggleButton=Basculer
+pref.resetButton=Réinitialiser