--- a/browser/chrome/browser/customizableui/customizableWidgets.properties
+++ b/browser/chrome/browser/customizableui/customizableWidgets.properties
@@ -86,13 +86,15 @@ feed-button.tooltiptext = S'abonner à cette page…
 characterencoding-button.label = Encodage de caractères
 characterencoding-button.tooltiptext2 = Afficher les options d'encodage de caractères
 
 email-link-button.label = Envoyer lien par courriel
 # LOCALIZATION NOTE (email-link-button.tooltiptext2): Use the unicode ellipsis char,
 # \u2026, or use "..." if \u2026 doesn't suit traditions in your locale.
 email-link-button.tooltiptext2 = Envoyer par courriel un lien vers la page…
 
-# LOCALIZATION NOTE(quit-button.tooltiptext.linux): %S is the keyboard shortcut
-quit-button.tooltiptext.linux = Quitter (%S)
+# LOCALIZATION NOTE(quit-button.tooltiptext.linux2): %1$S is the brand name (e.g. Firefox),
+# %2$S is the keyboard shortcut
+quit-button.tooltiptext.linux2 = Quitter %1$S (%2$S)
+
 # LOCALIZATION NOTE(quit-button.tooltiptext.mac): %1$S is the brand name (e.g. Firefox),
 # %2$S is the keyboard shortcut
 quit-button.tooltiptext.mac = Quitter %1$S (%2$S)